scipy.io.wavfile.write¶
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scipy.io.wavfile.write(filename, rate, data)[source]¶ Write a numpy array as a WAV file.
Parameters: filename : string or open file handle
Output wav file.
rate : int
The sample rate (in samples/sec).
data : ndarray
A 1-D or 2-D numpy array of either integer or float data-type.
Notes
- 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: [R94]
WAV format Min Max NumPy dtype 32-bit floating-point -1.0 +1.0 float32 32-bit PCM -2147483648 +2147483647 int32 16-bit PCM -32768 +32767 int16 8-bit PCM 0 255 uint8 Note that 8-bit PCM is unsigned.
References
[R94] (1, 2) IBM Corporation and Microsoft Corporation, “Multimedia Programming Interface and Data Specifications 1.0”, section “Data Format of the Samples”, August 1991 http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/Docs/riffmci.pdf