Noisy

Different types of noise are available. The following table lists the color of noise and how the power and power density change per octave.

Color	Power	Power density
White	+3 dB	0 dB
Pink	0 dB	-3 dB
Blue	+6 dB	+3 dB
Brown	-3 dB	-6 dB
Violet	+9 dB	+6 dB

Curves corresponding to the noise color are generated in frequency domain.

noisy.blue(ntaps)

Compute impulse response for blue noise.

Parameters:ntaps – Length of impulse response. Returns:Impulse response of length ntaps.

noisy.brown(ntaps)

Compute impulse response for brown noise.

Parameters:ntaps – Length of impulse response. Returns:Impulse response of length ntaps.

noisy.pink(ntaps)

Compute impulse response for pink noise.

Parameters:ntaps – Length of impulse response. Returns:Impulse response of length ntaps.

noisy.violet(ntaps)

Compute impulse response for violet noise.

Parameters:ntaps – Length of impulse response. Returns:Impulse response of length ntaps.

noisy.white(ntaps)

Compute impulse response for white noise.

Parameters:ntaps – Length of impulse response. Returns:Impulse response of length ntaps.