Control Signals

Objects designed to create parameter’s control at audio rate.

These objects can be used to create envelopes, line segments and conversion from python number to audio signal.

The audio streams of these objects can’t be sent to the output soundcard.

Objects in this category

• Fader : Fadein - fadeout envelope generator.

• Adsr : Attack - Decay - Sustain - Release envelope generator.

• Linseg : Draw a series of line segments between specified break-points.

• Expseg : Draw a series of exponential segments between specified break-points.

• Sig : Convert numeric value to PyoObject signal.

• SigTo : Convert numeric value to PyoObject signal with portamento.

Fader

class Fader(fadein=0.01, fadeout=0.1, dur=0, mul=1, add=0)

Fadein - fadeout envelope generator.

Generate an amplitude envelope between 0 and 1 with control on fade times and total duration of the envelope.

The play() method starts the envelope and is not called at the object creation time.

Parent

PyoObject

Args

fadein: float, optional

Rising time of the envelope in seconds. Defaults to 0.01.

fadeout: float, optional

Falling time of the envelope in seconds. Defaults to 0.1.

dur: float, optional

Total duration of the envelope in seocnds. Defaults to 0, which means wait for the stop() method to start the fadeout.

Note

The out() method is bypassed. Fader’s signal can not be sent to audio outs.

The play() method starts the envelope.

The stop() method calls the envelope’s release phase if dur = 0.

As of version 0.8.0, exponential or logarithmic envelopes can be created with the exponent factor (see setExp() method).

As of version 0.9.2, Fader will send a trigger signal at the end of the playback. User can retreive the trigger streams by calling obj[‘trig’]. Useful to synchronize other processes.

See also

Adsr, Linseg, Expseg

>>> s = Server().boot()
>>> s.start()
>>> f = Fader(fadein=0.5, fadeout=0.5, dur=2, mul=.5)
>>> a = BrownNoise(mul=f).mix(2).out()
>>> def repeat():
...     f.play()
>>> pat = Pattern(function=repeat, time=2).play()

Public Data Attributes:

fadein	float.
fadeout	float.
dur	float.
exp	float.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__([fadein, fadeout, dur, mul, add])
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
setFadein(x)	Replace the fadein attribute.
setFadeout(x)	Replace the fadeout attribute.
setDur(x)	Replace the dur attribute.
setExp(x)	Sets an exponent factor to create exponential or logarithmic envelope.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

out(chnl=0, inc=1, dur=0, delay=0)

Start processing and send samples to audio output beginning at chnl.

This method returns self, allowing it to be applied at the object creation.

Args

chnl: int, optional

Physical output assigned to the first audio stream of the object. Defaults to 0.

inc: int, optional

Output channel increment value. Defaults to 1.

dur: float, optional

Duration, in seconds, of the object’s activation. The default is 0 and means infinite duration.

delay: float, optional

Delay, in seconds, before the object’s activation. Defaults to 0.

If chnl >= 0, successive streams increment the output number by inc and wrap around the global number of channels.

If chnl is negative, streams begin at 0, increment the output number by inc and wrap around the global number of channels. Then, the list of streams is scrambled.

If chnl is a list, successive values in the list will be assigned to successive streams.

stop(wait=0)

Stop processing.

This method returns self, allowing it to be applied at the object creation.

Args

wait: float, optional

Delay, in seconds, before the process is actually stopped. If autoStartChildren is activated in the Server, this value is propagated to the children objects. Defaults to 0.

Note

if the method setStopDelay(x) was called before calling stop(wait) with a positive wait value, the wait value won’t overwrite the value given to setStopDelay for the current object, but will be the one propagated to children objects. This allow to set a waiting time for a specific object with setStopDelay whithout changing the global delay time given to the stop method.

Fader and Adsr objects ignore waiting time given to the stop method because they already implement a delayed processing triggered by the stop call.

setFadein(x)

Replace the fadein attribute.

Args

x: float

new fadein attribute.

setFadeout(x)

Replace the fadeout attribute.

Args

x: float

new fadeout attribute.

setDur(x)

Replace the dur attribute.

Args

x: float

new dur attribute.

setExp(x)

Sets an exponent factor to create exponential or logarithmic envelope.

The default value is 1.0, which means linear segments. A value higher than 1.0 will produce exponential segments while a value between 0 and 1 will produce logarithmic segments. Must be > 0.0.

Args

x: float

new exp attribute.

ctrl(map_list=None, title=None, wxnoserver=False)

Opens a sliders window to control the parameters of the object. SLMap has a dataOnly attribute to identify parameters that don’t audio signal as control but only discrete values.

If a list of values are given to a parameter, a multisliders will be used to control each stream independently.

Args

map_list: list of SLMap objects, optional

Users defined set of parameters scaling. There is default scaling for each object that accept ctrl method.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property fadein

float. Rising time of the envelope in seconds.

property fadeout

float. Falling time of the envelope in seconds.

property dur

float. Total duration of the envelope.

property exp

float. Exponent factor of the envelope.

Adsr

class Adsr(attack=0.01, decay=0.05, sustain=0.707, release=0.1, dur=0, mul=1, add=0)

Attack - Decay - Sustain - Release envelope generator.

Calculates the classical ADSR envelope using linear segments. Duration can be set to 0 to give an infinite sustain. In this case, the stop() method calls the envelope release part.

The play() method starts the envelope and is not called at the object creation time.

Parent

PyoObject

Args

attack: float, optional

Duration of the attack phase in seconds. Defaults to 0.01.

decay: float, optional

Duration of the decay in seconds. Defaults to 0.05.

sustain: float, optional

Amplitude of the sustain phase. Defaults to 0.707.

release: float, optional

Duration of the release in seconds. Defaults to 0.1.

dur: float, optional

Total duration of the envelope in seconds. Defaults to 0, which means wait for the stop() method to start the release phase.

Note

The out() method is bypassed. Adsr’s signal can not be sent to audio outs.

The play() method starts the envelope.

The stop() method calls the envelope’s release phase if dur = 0.

As of version 0.8.0, exponential or logarithmic envelopes can be created with the exponent factor (see setExp() method).

As of version 0.9.2, Adsr will send a trigger signal at the end of the playback. User can retreive the trigger streams by calling obj[‘trig’]. Useful to synchronize other processes.

See also

Fader, Linseg, Expseg

>>> s = Server().boot()
>>> s.start()
>>> f = Adsr(attack=.01, decay=.2, sustain=.5, release=.1, dur=2, mul=.5)
>>> a = BrownNoise(mul=f).mix(2).out()
>>> def repeat():
...     f.play()
>>> pat = Pattern(function=repeat, time=2).play()

Public Data Attributes:

attack	float.
decay	float.
sustain	float.
release	float.
dur	float.
exp	float.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__([attack, decay, sustain, release, ...])
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
setAttack(x)	Replace the attack attribute.
setDecay(x)	Replace the decay attribute.
setSustain(x)	Replace the sustain attribute.
setRelease(x)	Replace the sustain attribute.
setDur(x)	Replace the dur attribute.
setExp(x)	Sets an exponent factor to create exponential or logarithmic envelope.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

out(chnl=0, inc=1, dur=0, delay=0)

Start processing and send samples to audio output beginning at chnl.

This method returns self, allowing it to be applied at the object creation.

Args

chnl: int, optional

Physical output assigned to the first audio stream of the object. Defaults to 0.

inc: int, optional

Output channel increment value. Defaults to 1.

dur: float, optional

Duration, in seconds, of the object’s activation. The default is 0 and means infinite duration.

delay: float, optional

Delay, in seconds, before the object’s activation. Defaults to 0.

If chnl >= 0, successive streams increment the output number by inc and wrap around the global number of channels.

If chnl is negative, streams begin at 0, increment the output number by inc and wrap around the global number of channels. Then, the list of streams is scrambled.

If chnl is a list, successive values in the list will be assigned to successive streams.

stop(wait=0)

Stop processing.

This method returns self, allowing it to be applied at the object creation.

Args

wait: float, optional

Delay, in seconds, before the process is actually stopped. If autoStartChildren is activated in the Server, this value is propagated to the children objects. Defaults to 0.

Note

if the method setStopDelay(x) was called before calling stop(wait) with a positive wait value, the wait value won’t overwrite the value given to setStopDelay for the current object, but will be the one propagated to children objects. This allow to set a waiting time for a specific object with setStopDelay whithout changing the global delay time given to the stop method.

Fader and Adsr objects ignore waiting time given to the stop method because they already implement a delayed processing triggered by the stop call.

setAttack(x)

Replace the attack attribute.

Args

x: float

new attack attribute.

setDecay(x)

Replace the decay attribute.

Args

x: float

new decay attribute.

setSustain(x)

Replace the sustain attribute.

Args

x: float

new sustain attribute.

setRelease(x)

Replace the sustain attribute.

Args

x: float

new sustain attribute.

setDur(x)

Replace the dur attribute.

Args

x: float

new dur attribute.

setExp(x)

Sets an exponent factor to create exponential or logarithmic envelope.

The default value is 1.0, which means linear segments. A value higher than 1.0 will produce exponential segments while a value between 0 and 1 will produce logarithmic segments. Must be > 0.0.

Args

x: float

new exp attribute.

ctrl(map_list=None, title=None, wxnoserver=False)

Opens a sliders window to control the parameters of the object. SLMap has a dataOnly attribute to identify parameters that don’t audio signal as control but only discrete values.

If a list of values are given to a parameter, a multisliders will be used to control each stream independently.

Args

map_list: list of SLMap objects, optional

Users defined set of parameters scaling. There is default scaling for each object that accept ctrl method.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property attack

float. Duration of the attack phase in seconds.

property decay

float. Duration of the decay phase in seconds.

property sustain

float. Amplitude of the sustain phase.

property release

float. Duration of the release phase in seconds.

property dur

float. Total duration of the envelope.

property exp

float. Exponent factor of the envelope.

Linseg

class Linseg(list, loop=False, initToFirstVal=False, mul=1, add=0)

Draw a series of line segments between specified break-points.

The play() method starts the envelope and is not called at the object creation time.

Parent

PyoObject

Args

list: list of tuples

Points used to construct the line segments. Each tuple is a new point in the form (time, value).

Times are given in seconds and must be in increasing order.

loop: boolean, optional

Looping mode. Defaults to False.

initToFirstVal: boolean, optional

If True, audio buffer will be filled at initialization with the first value of the line. Defaults to False.

Note

The out() method is bypassed. Linseg’s signal can not be sent to audio outs.

See also

Fader, Adsr, Expseg

>>> s = Server().boot()
>>> s.start()
>>> l = Linseg([(0,500),(.03,1000),(.1,700),(1,500),(2,500)], loop=True)
>>> a = Sine(freq=l, mul=.3).mix(2).out()
>>> # then call:
>>> l.play()

Public Data Attributes:

list	float.
loop	boolean.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__(list[, loop, initToFirstVal, mul, add])
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
setList(x)	Replace the list attribute.
replace(x)	Alias for setList method.
getPoints()
setLoop(x)	Replace the loop attribute.
pause()	Toggles between play and stop mode without reset.
clear()	Resets the internal audio buffer to 0.
graph([xlen, yrange, title, wxnoserver])	Opens a grapher window to control the shape of the envelope.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

out(chnl=0, inc=1, dur=0, delay=0)

Start processing and send samples to audio output beginning at chnl.

This method returns self, allowing it to be applied at the object creation.

Args

chnl: int, optional

Physical output assigned to the first audio stream of the object. Defaults to 0.

inc: int, optional

Output channel increment value. Defaults to 1.

dur: float, optional

Duration, in seconds, of the object’s activation. The default is 0 and means infinite duration.

delay: float, optional

Delay, in seconds, before the object’s activation. Defaults to 0.

If chnl >= 0, successive streams increment the output number by inc and wrap around the global number of channels.

If chnl is negative, streams begin at 0, increment the output number by inc and wrap around the global number of channels. Then, the list of streams is scrambled.

If chnl is a list, successive values in the list will be assigned to successive streams.

setList(x)

Replace the list attribute.

Args

x: list of tuples

new list attribute.

replace(x)

Alias for setList method.

Args

x: list of tuples

new list attribute.

setLoop(x)

Replace the loop attribute.

Args

x: boolean

new loop attribute.

pause()

Toggles between play and stop mode without reset.

clear()

Resets the internal audio buffer to 0.

graph(xlen=None, yrange=None, title=None, wxnoserver=False)

Opens a grapher window to control the shape of the envelope.

When editing the grapher with the mouse, the new set of points will be send to the object on mouse up.

Ctrl+C with focus on the grapher will copy the list of points to the clipboard, giving an easy way to insert the new shape in a script.

Args

xlen: float, optional

Set the maximum value of the X axis of the graph. If None, the maximum value is retrieve from the current list of points.

yrange: tuple, optional

Set the min and max values of the Y axis of the graph. If None, min and max are retrieve from the current list of points.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property list

float. List of points (time, value).

property loop

boolean. Looping mode.

Expseg

class Expseg(list, loop=False, exp=10, inverse=True, initToFirstVal=False, mul=1, add=0)

Draw a series of exponential segments between specified break-points.

The play() method starts the envelope and is not called at the object creation time.

Parent

PyoObject

Args

list: list of tuples

Points used to construct the line segments. Each tuple is a new point in the form (time, value).

Times are given in seconds and must be in increasing order.

loop: boolean, optional

Looping mode. Defaults to False.

exp: float, optional

Exponent factor. Used to control the slope of the curves. Defaults to 10.

inverse: boolean, optional

If True, downward slope will be inversed. Useful to create biexponential curves. Defaults to True.

initToFirstVal: boolean, optional

If True, audio buffer will be filled at initialization with the first value of the line. Defaults to False.

Note

The out() method is bypassed. Expseg’s signal can not be sent to audio outs.

See also

Fader, Adsr, linseg

>>> s = Server().boot()
>>> s.start()
>>> l = Expseg([(0,500),(.03,1000),(.1,700),(1,500),(2,500)], loop=True)
>>> a = Sine(freq=l, mul=.3).mix(2).out()
>>> # then call:
>>> l.play()

Public Data Attributes:

list	float.
loop	boolean.
exp	float.
inverse	boolean.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__(list[, loop, exp, inverse, ...])
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
setList(x)	Replace the list attribute.
setLoop(x)	Replace the loop attribute.
setExp(x)	Replace the exp attribute.
setInverse(x)	Replace the inverse attribute.
replace(x)	Alias for setList method.
pause()	Toggles between play and stop mode without reset.
clear()	Resets the internal audio buffer to 0.
getPoints()
graph([xlen, yrange, title, wxnoserver])	Opens a grapher window to control the shape of the envelope.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

out(chnl=0, inc=1, dur=0, delay=0)

Start processing and send samples to audio output beginning at chnl.

This method returns self, allowing it to be applied at the object creation.

Args

chnl: int, optional

Physical output assigned to the first audio stream of the object. Defaults to 0.

inc: int, optional

Output channel increment value. Defaults to 1.

dur: float, optional

Duration, in seconds, of the object’s activation. The default is 0 and means infinite duration.

delay: float, optional

Delay, in seconds, before the object’s activation. Defaults to 0.

If chnl >= 0, successive streams increment the output number by inc and wrap around the global number of channels.

If chnl is negative, streams begin at 0, increment the output number by inc and wrap around the global number of channels. Then, the list of streams is scrambled.

If chnl is a list, successive values in the list will be assigned to successive streams.

setList(x)

Replace the list attribute.

Args

x: list of tuples

new list attribute.

setLoop(x)

Replace the loop attribute.

Args

x: boolean

new loop attribute.

setExp(x)

Replace the exp attribute.

Args

x: float

new exp attribute.

setInverse(x)

Replace the inverse attribute.

Args

x: boolean

new inverse attribute.

replace(x)

Alias for setList method.

Args

x: list of tuples

new list attribute.

pause()

Toggles between play and stop mode without reset.

clear()

Resets the internal audio buffer to 0.

graph(xlen=None, yrange=None, title=None, wxnoserver=False)

Opens a grapher window to control the shape of the envelope.

When editing the grapher with the mouse, the new set of points will be send to the object on mouse up.

Ctrl+C with focus on the grapher will copy the list of points to the clipboard, giving an easy way to insert the new shape in a script.

Args

xlen: float, optional

Set the maximum value of the X axis of the graph. If None, the maximum value is retrieve from the current list of points. Defaults to None.

yrange: tuple, optional

Set the min and max values of the Y axis of the graph. If None, min and max are retrieve from the current list of points. Defaults to None.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property list

float. List of points (time, value).

property loop

boolean. Looping mode.

property exp

float. Exponent factor.

property inverse

boolean. Inverse downward slope.

Sig

class Sig(value, mul=1, add=0)

Convert numeric value to PyoObject signal.

Parent

PyoObject

Args

value: float or PyoObject

Numerical value to convert.

>>> import random
>>> s = Server().boot()
>>> s.start()
>>> fr = Sig(value=400)
>>> p = Port(fr, risetime=0.001, falltime=0.001)
>>> a = SineLoop(freq=p, feedback=0.08, mul=.3).out()
>>> b = SineLoop(freq=p*1.005, feedback=0.08, mul=.3).out(1)
>>> def pick_new_freq():
...     fr.value = random.randrange(300,601,50)
>>> pat = Pattern(function=pick_new_freq, time=0.5).play()

Public Data Attributes:

value

float or PyoObject.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__(value[, mul, add])
setValue(x)	Changes the value of the signal stream.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

setValue(x)

Changes the value of the signal stream.

Args

x: float or PyoObject

Numerical value to convert.

ctrl(map_list=None, title=None, wxnoserver=False)

Opens a sliders window to control the parameters of the object. SLMap has a dataOnly attribute to identify parameters that don’t audio signal as control but only discrete values.

If a list of values are given to a parameter, a multisliders will be used to control each stream independently.

Args

map_list: list of SLMap objects, optional

Users defined set of parameters scaling. There is default scaling for each object that accept ctrl method.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property value

float or PyoObject. Numerical value to convert.

SigTo

class SigTo(value, time=0.025, init=0.0, mul=1, add=0)

Convert numeric value to PyoObject signal with portamento.

When value is changed, a ramp is applied from the current value to the new value. Can be used with PyoObject to apply a linear portamento on an audio signal.

Parent

PyoObject

Args

value: float or PyoObject

Numerical value to convert.

time: float or PyoObject, optional

Ramp time, in seconds, to reach the new value. Defaults to 0.025.

init: float, optional

Initial value of the internal memory. Defaults to 0.

Note

The out() method is bypassed. SigTo’s signal can not be sent to audio outs.

>>> import random
>>> s = Server().boot()
>>> s.start()
>>> fr = SigTo(value=200, time=0.5, init=200)
>>> a = SineLoop(freq=fr, feedback=0.08, mul=.3).out()
>>> b = SineLoop(freq=fr*1.005, feedback=0.08, mul=.3).out(1)
>>> def pick_new_freq():
...     fr.value = random.randrange(200,501,50)
>>> pat = Pattern(function=pick_new_freq, time=1).play()

Public Data Attributes:

value	float or PyoObject.
time	floator PyoObject.

Inherited from PyoObject

mul	float or PyoObject.
add	float or PyoObject.

Public Methods:

__init__(value[, time, init, mul, add])
setValue(x)	Changes the value of the signal stream.
setTime(x)	Changes the ramp time of the object.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObject

__init__([mul, add])
__add__(x)
__radd__(x)
__iadd__(x)
__sub__(x)
__rsub__(x)
__isub__(x)
__mul__(x)
__rmul__(x)
__imul__(x)
__truediv__(x)
__rtruediv__(x)
__itruediv__(x)
__div__(x)
__rdiv__(x)
__idiv__(x)
__pow__(x)
__rpow__(x)
__mod__(x)
__neg__()
__lt__(x)	Return self<value.
__le__(x)	Return self<=value.
__eq__(x)	Return self==value.
__ne__(x)	Return self!=value.
__gt__(x)	Return self>value.
__ge__(x)	Return self>=value.
__do_comp__(comp, mode[, default])
isPlaying([all])	Returns True if the object is currently playing, otherwise, returns False.
isOutputting([all])	Returns True if the object is outputting.
get([all])	Return the first sample of the current buffer as a float.
play([dur, delay])	Start processing without sending samples to output.
out([chnl, inc, dur, delay])	Start processing and send samples to audio output beginning at chnl.
stop([wait])	Stop processing.
mix([voices])	Mix the object's audio streams into voices streams and return a Mix object.
range(min, max)	Adjust mul and add attributes according to a given range.
setMul(x)	Replace the mul attribute.
setAdd(x)	Replace the add attribute.
setSub(x)	Replace and inverse the add attribute.
setDiv(x)	Replace and inverse the mul attribute.
set(attr, value[, port, callback])	Replace any attribute with portamento.
ctrl([map_list, title, wxnoserver])	Opens a sliders window to control the parameters of the object.

Inherited from PyoObjectBase

__init__()
dump()	Print infos about the current state of the object.
getBaseObjects()	Return a list of Stream objects managed by the instance.
getServer()	Return a reference to the current Server object.
getSamplingRate()	Return the current sampling rate (samples per second), as a float.
getBufferSize()	Return the current buffer size (samples per buffer), as an integer.
allowAutoStart([switch])	When autoStartChildren is activated in the Server, call this method with False as argument to stop the propagation of play/out/stop methods to and from this object.
useWaitTimeOnStop()	When autoStartChildren is activated in the Server, call this method to force an object given to the mul attribute of another object to use the wait time from the stop method instead of being stopped immediately.
addLinkedObject(x)	When autoStartChildren is activated in the Server, use this method to explicitly add an object in a dsp chain, which is generally controlled by the last object of the chain.
setStopDelay(x)	Set a specific waiting time when calling the stop method on this object.
getStopDelay()	Return the waiting time applied when calling the stop method on this object.
__iter__()
__next__()
next()	Alias for __next__ method.
__getitem__(i)
__setitem__(i, x)
__len__()
__repr__()	Return repr(self).
__dir__()	Default dir() implementation.

Private Data Attributes:

Inherited from PyoObject

_STREAM_TYPE

Inherited from PyoObjectBase

_STREAM_TYPE

Private Methods:

Inherited from PyoObject

_init_play()
_reset_from_set([attr])

Inherited from PyoObjectBase

_autoplay([dur, delay])
_autostop([wait])

---

setValue(x)

Changes the value of the signal stream.

Args

x: float or PyoObject

Numerical value to convert.

setTime(x)

Changes the ramp time of the object.

Args

x: float or PyoObject

New ramp time in seconds.

ctrl(map_list=None, title=None, wxnoserver=False)

Opens a sliders window to control the parameters of the object. SLMap has a dataOnly attribute to identify parameters that don’t audio signal as control but only discrete values.

If a list of values are given to a parameter, a multisliders will be used to control each stream independently.

Args

map_list: list of SLMap objects, optional

Users defined set of parameters scaling. There is default scaling for each object that accept ctrl method.

title: string, optional

Title of the window. If none is provided, the name of the class is used.

wxnoserver: boolean, optional

With wxPython graphical toolkit, if True, tells the interpreter that there will be no server window.

If wxnoserver is set to True, the interpreter will not wait for the server GUI before showing the controller window.

property value

float or PyoObject. Numerical value to convert.

property time

floator PyoObject. Ramp time in seconds.