aspen.stimuli.continuity¶

Continuity illusion stimulus

Classes

Continuity([samp_freq, target_duration, …])

Stimulus that occurs continuity illusion.

class aspen.stimuli.continuity.Continuity(samp_freq=16000, target_duration=100, gap_duration=100, gap_method='replace', gap_ramp_duration=10, target_snr=20)[source]¶

Bases: aspen.interfaces.abs_common_interface.AbsCommonInterface, aspen.interfaces.abs_stimulus_interface.AbsStimulusInterface

Stimulus that occurs continuity illusion.

Basic stimulus for continuity illusion consists of the repetitions of target_signal and gap_signal.

Parameters

samp_freq¶ (int) – Sampling frequency. Defaults to 16000.
target_duration¶ (float) – Duration of target signal in millisecond. Defaults to 100.
gap_duration¶ (float) – Duration of gap signal in millisecond. Defaults to 100.
gap_method¶ (str) – Kind of gap method. In the case of replace and silent, the gap sections are replaced by noise and silent, respectively. In the case of overlap, the target signal superimpose noise in the gap sections. Defaults to “replace”.
gap_ramp_duration¶ (float) – Duration of ramps in the gap sections in millisecond. Defaults to 10.
target_snr¶ (float) – Signal-to-noise ratio. Defaults to 20.

__call__(x)[source]¶

Generate stimulus for continuity illusion.

Parameters: x¶ (Sequence[ndarray]) – Target signal (np.ndarray) and noise signal (np.ndarray). x must be sequence-like object such as list, tuple and so on. The first element is target signal and the second one is noise (i.e. [target, noise]). The duration of noise must be equal to or greater than the one of target signal. In the case of gap_method=silent, the second element is ignored.
Return type: ndarray
Returns: Stimulus for continuity illusion.

static add_arguments(parser)[source]¶: add arguments

classmethod load_class_kwargs(args)¶

Return the kwargs dict for class __init__ from parsed arguments

Parameters: args¶ (Namespace) – (config)argparse arguments
Return type: dict
Returns: kwargs for class __init__