Pink noise signal generator.
Simulation of pink noise is based on the Voss-McCartney algorithm. Ref.:
S.J. Orfanidis: Signal Processing (2010), pp. 729-733
online discussion: http://www.firstpr.com.au/dsp/pink-noise/
The idea is to iteratively add larger-wavelength noise to get 1/f characteristic.
seed= Int(0, …¶
Seed for random number generator, defaults to 0. This parameter should be set differently for different instances to guarantee statistically independent (non-correlated) outputs.
depth= Int(16, …¶
“Octave depth” – higher values for 1/f spectrum at low frequencies, but longer calculation, defaults to 16.
Deliver the signal.