scipy.io.wavfile.write#

A 1-D or 2-D NumPy array of either integer or float data-type.

• Writes a simple uncompressed WAV file.
• To write multiple-channels, use a 2-D array of shape (Nsamples, Nchannels).
• The bits-per-sample and PCM/float will be determined by the data-type.

Common data types: [1]

Note that 8-bit PCM is unsigned.

IBM Corporation and Microsoft Corporation, “Multimedia Programming Interface and Data Specifications 1.0”, section “Data Format of the Samples”, August 1991 http://www.tactilemedia.com/info/MCI_Control_Info.html

Create a 100Hz sine wave, sampled at 44100Hz. Write to 16-bit PCM, Mono.

>>> from scipy.io.wavfile import write >>> samplerate = 44100; fs = 100 >>> t = np.linspace(0., 1., samplerate) >>> amplitude = np.iinfo(np.int16).max >>> data = amplitude * np.sin(2. * np.pi * fs * t) >>> write("example.wav", samplerate, data.astype(np.int16))