06-filters

• 01-lowpass-filters.py - The effect of the order of a filter.
• 02-bandpass-filters.py - Narrowing a bandpass filter bandwidth.
• 03-complex-resonator.py - Filtering by mean of a complex multiplication.
• 04-phasing.py - The phasing effect.
• 05-convolution-filters.py - Circular convolution.
• 06-vocoder.py - Analysis/resynthesis vocoder effect.
• 07-hilbert-transform.py - Barberpole-like phasing effect.