pyACA.ToolReadAudio Namespace Reference

Functions
	ToolReadAudio (cAudioFilePath)
	helper function: read audio from wav

Function Documentation

ToolReadAudio()

ToolReadAudio

(

cAudioFilePath

)

helper function: read audio from wav

Parameters

cAudioFilePath

path to audio file

Returns

f_s: sample rate

x: array with floating point audio data (dimension samples x channels)

Definition at line 12 of file ToolReadAudio.py.

def ToolReadAudio(cAudioFilePath):
    [f_s, x] = wavread(cAudioFilePath)
 
    if x.dtype == 'float32':
        x = x
    else:
        # change range to [-1,1)
        if x.dtype == 'uint8':
            nbits = 8
        elif x.dtype == 'int16':
            nbits = 16
        elif x.dtype == 'int32':
            nbits = 32
 
        x = x / float(2**(nbits - 1))
 
    # special case of unsigned format
    if x.dtype == 'uint8':
        x = x - 1.
 
    return f_s, x