music.note_with_doppler

music.note_with_doppler(freq=220, duration=2, waveform_table=array([-1., -0.99975586, -0.99951172, ..., -0.99926758, -0.99951172, -0.99975586], shape=(16384,)), x=(-10, 10), y=(1, 1), stereo=True, zeta=0.215, air_temp=20, number_of_samples=0, sample_rate=44100)

A simple note with a transition of localization and resulting Doppler effect.

Parameters:

freqscalar

The frequency of the note in Hertz.

durationscalar

The duration of the note in seconds.

waveform_tablearray_like

The table with the waveform to synthesize the sound.

xiterable of scalars

The starting and ending x positions.

yiterable of scalars

The starting and ending y positions.

stereobool

If True, returns a (2, nsamples) array representing a stereo sound. Else it returns a simple array for a mono sound.

zetafloat

The distance between the listener’s ears in meters. It is used to compute interaural differences when generating stereo output.

air_tempscalar

The air temperature in Celsius. (Used to calculate the acoustic velocity.)

number_of_samplesinteger

The number of samples in the sound. If not 0, d is ignored.

sample_rateinteger

The sample rate.

Returns:

sndarray

The PCM samples of the resulting sound.

See also

D_

a note with arbitrary vibratos, transitions of pitch and transitions of localization.

PV_

a note with an arbitrary sequence of pitch transition and a meta-vibrato.

Notes

Cite the following article whenever you use this function.

References

[1]

Fabbri, Renato, et al. “Musical elements in the discrete-time representation of sound.” arXiv preprint arXiv:abs/1412.6853 (2017)

Examples

>>> write_wav_stereo(note_with_doppler())
>>> write_wav_mono(T()*note_with_doppler(stereo=False))