Write a numpy array as a WAV file
filename – The name of the file to write (will be over-written) rate – The sample rate (in samples/sec). data – A 1-d or 2-d numpy array of integer data-type.
The bits-per-sample will be determined by the data-type To write multiple-channels, use a 2-d array of shape (Nsamples, Nchannels)
Writes a simple uncompressed WAV file.