aspen.sounds.am_tone¶

Amplitude-modulated (AM) tone

Functions

am_tone([duration, freq, phase, …])

Generate sinusoidally amplitude modulated tone.

Classes

AmTone([am_tone_duration, am_tone_freq, …])

Generate sinusoidally amplitude modulated tone.

class aspen.sounds.am_tone.AmTone(am_tone_duration=[1000], am_tone_freq=[440], am_tone_phase=[0], am_tone_modulation_freq=[440], am_tone_depth=[100], am_tone_modulator_phase=[0], am_tone_num_signals=1, samp_freq=16000)[source]¶

Bases: aspen.interfaces.abs_common_interface.AbsCommonInterface, aspen.interfaces.abs_sound_interface.AbsSoundInterface

Generate sinusoidally amplitude modulated tone.

Parameters

am_tone_duration¶ (Sequence[float]) – Duration of am tone in millisecond. Defaults to [1000].
am_tone_freq¶ (Sequence[float]) – Frequency of carrier in Hz. Defaults to [440].
am_tone_phase¶ (Sequence[float]) – Phase of carrier in degree. Defaults to [0].
am_tone_modulation_freq¶ (Sequence[float]) – Frequency of modulator in Hz. Defaults to [440].
am_tone_depth¶ (Sequence[float]) – Depth of modulator in percentage. Defaults to [100].
am_tone_modulator_phase¶ (Sequence[float]) – Phase of modulator in degree. Defaults to [0].
am_tone_num_signals¶ (int) – Number of signals. If this value greater than 2, the other arguments should contain 2 types. Defaults to 1.
samp_freq¶ (int) – Sampling frequency. Defaults to 16000.

__call__()¶

Generate a specified number of signals.

Return type

List[ndarray]

Returns

Generate signals.: Output well be sequence-like object such as list, tuple and so on.

_generate_each(idx)[source]¶

Generate each signal.

Parameters: idx¶ (int) – Index of signal generation.
Return type: ndarray
Returns: Generate signal.

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__

aspen.sounds.am_tone.am_tone(duration=[1000], freq=[440], phase=[0], modulation_freq=[440], depth=[100], modulator_phase=[0], num_signals=1, samp_freq=16000)[source]¶

Generate sinusoidally amplitude modulated tone.

Parameters

duration¶ (Sequence[float]) – The duration of am tone in millisecond. Defaults to [1000].
freq¶ (Sequence[float]) – The frequency of the carrier in Hz. Defaults to [440].
phase¶ (Sequence[float]) – Phase of modulator in degree.
modulation_freq¶ (Sequence[float]) – The frequency of modulator in Hz. Defaults to [440].
depth¶ (Sequence[float]) – Depth of modulator in percentage. Defaults to [100].
modulator_phase¶ (Sequence[float]) – Phase of modulator in degree. Defaults to [0].
num_signals¶ (int) – Number of signals. If this value greater than 2, the other arguments should contain 2 types. Defaults to 1.
samp_freq¶ (int) – Sampling frequency. Defaults to 16000.

Return type

List[ndarray]

Returns

Output signals.