Usage

Remix signal

Create AM/FM signal with three channels and a sampling rate of 16kHz using audresample.am_fm_synth().

>>> import audresample
>>> sampling_rate = 16000
>>> num_samples = 16500
>>> num_channels = 3
>>> signal = audresample.am_fm_synth(num_samples, num_channels, sampling_rate)
>>> signal.shape
(3, 16500)
>>> plot_signal(signal, sampling_rate)

Mixdown signal to mono.

>>> mixed = audresample.remix(signal, mixdown=True)
>>> mixed.shape
(1, 16500)
>>> plot_signal(mixed, sampling_rate)

Select the last channel.

>>> mixed = audresample.remix(signal, channels=-1)
>>> mixed.shape
(1, 16500)
>>> plot_signal(mixed, sampling_rate)

Select the second and first channels.

>>> mixed = audresample.remix(signal, channels=[1, 0])
>>> mixed.shape
(2, 16500)
>>> plot_signal(mixed, sampling_rate)

Mix down the first and second channels to mono.

>>> mixed = audresample.remix(signal, channels=[0, 1], mixdown=True)
>>> mixed.shape
(1, 16500)
>>> plot_signal(mixed, sampling_rate)

Resample signal

Create AM/FM signal with two channels and a sampling rate of 48kHz using audresample.am_fm_synth().

>>> original_rate = 48000
>>> num_original = 16000
>>> num_channels = 2
>>> signal = audresample.am_fm_synth(num_original, num_channels, original_rate)
>>> signal.shape
(2, 16000)
>>> plot_signal(signal, original_rate)

Resample signal to 8kHz using audresample.resample().

>>> target_rate = 8000
>>> resampled = audresample.resample(signal, original_rate, target_rate)
>>> resampled.shape
(2, 2667)
>>> plot_signal(resampled, target_rate)