Acoular 19.02 documentation

UncorrelatedNoiseSource

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UncorrelatedNoiseSource

class acoular.sources.UncorrelatedNoiseSource

Bases: acoular.sources.SamplesGenerator

Class to simulate white or pink noise as uncorrelated signal at each channel.

The output is being generated via the result() generator.

seed = CArray(dtype = uint32, desc = "random seed values")

Array with seeds for random number generator. When left empty, arange(numchannels) + signal.seed will be used.

numchannels = Delegate('mics', 'num_mics')

Number of channels in output; is set automatically / depends on used microphone geometry.

mics = Trait(MicGeom, desc="microphone geometry")

MicGeom object that provides the microphone locations.

start_t = Float(0.0, desc="signal start time")

Start time of the signal in seconds, defaults to 0 s.

start = Float(0.0, desc="sample start time")

Start time of the data aquisition at microphones in seconds, defaults to 0 s.

numsamples = Delegate('signal')

Number of samples is set automatically / depends on signal.

sample_freq = Delegate('signal')

Sampling frequency of the signal; is set automatically / depends on signal.

result(num=128)

Python generator that yields the output at microphones block-wise.

Parameters:
num : integer, defaults to 128

This parameter defines the size of the blocks to be yielded (i.e. the number of samples per block) .

Returns:
Samples in blocks of shape (num, numchannels).

The last block may be shorter than num.

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