NoiseGenerator¶

class acoular.signals.NoiseGenerator¶

Bases: SignalGenerator

Abstract base class for noise signal generators.

The NoiseGenerator class defines the common interface for all SignalGenerator classes with noise signals. This class may be used as a base for class handling noise signals that can be characterized by their RMS amplitude.

It should not be used directly as it contains no real functionality.

See also

acoular.signals.PNoiseGenerator

For pink noise generation.

acoular.signals.WNoiseGenerator

For pink white generation.

acoular.sources.UncorrelatedNoiseSource

For per-channel noise generation.

rms = Float(1.0, desc='rms amplitude')¶

Root mean square (RMS) amplitude of the signal. For a point source, this corresponds to the RMS amplitude at a distance of 1 meter. Default is 1.0.

seed = Int(0, desc='random seed value')¶

Seed for random number generator. Default is 0. This parameter should be set differently for different instances to guarantee statistically independent (non-correlated) outputs.

digest = Property(depends_on=['rms', 'seed', 'sample_freq', 'num_samples'])¶

Internal identifier based on generator properties. (read-only)

abstractmethod signal()¶

Generate and deliver the periodic signal.