scipy.io.wavfile.read¶

scipy.io.wavfile.read(filename, mmap=False)[source]¶

Open a WAV file

Return the sample rate (in samples/sec) and data from a WAV file.

Parameters:

Parameters:	filename : string or open file handle Input wav file. mmap : bool, optional Whether to read data as memory-mapped. Only to be used on real files (Default: False). New in version 0.12.0.
Returns:	rate : int Sample rate of wav file. data : numpy array Data read from wav file. Data-type is determined from the file; see Notes.

filename : string or open file handle

Input wav file.

mmap : bool, optional

Whether to read data as memory-mapped. Only to be used on real files (Default: False).

New in version 0.12.0.

Returns:

rate : int

Sample rate of wav file.

data : numpy array

Data read from wav file. Data-type is determined from the file; see Notes.

Notes

This function cannot read wav files with 24-bit data.

Common data types: [R93]

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

[R93]

(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