expyfun.stimuli.texture_ERB¶
- expyfun.stimuli.texture_ERB(n_freqs=20, n_coh=None, rho=1.0, seq=('inc', 'nb', 'inc', 'nb'), fs=24414.0625, dur=1.0, SAM_freq=7.0, random_state=None, freq_lims=(200, 8000), verbose=True)[source]¶
Create ERB texture stimulus
- Parameters:
- n_freqsint
Number of tones in mixture (default 20).
- n_cohint | None
Number of tones to be temporally coherent. Default (None) is
int(np.round(n_freqs * 0.8)).- rhofloat
Correlation between the envelopes of grouped tones (default is 1.0).
- seqlist
Sequence of incoherent (‘inc’), coherent noise envelope (‘nb’), and SAM (‘sam’) mixtures. Default is
('inc', 'nb', 'inc', 'nb').- fsfloat
Sampling rate in Hz.
- durfloat
Duration (in seconds) of each token in seq (default is 1.0).
- SAM_freqfloat
The SAM frequency to use.
- random_stateNone | int | np.random.RandomState
The random generator state used for band selection and noise envelope generation.
- freq_limstuple
The lower and upper frequency limits (default is (200, 8000)).
- verbosebool
If True, print the resulting ERB spacing.
- Returns:
- xndarray, shape (n_samples,)
The stimulus, where
n_samples = len(seq) * (fs * dur)(approximately).
Notes
This function requires MNE.
