wav ( p圓6 ) rob : ~/ example_test $ ls 1_16 k. In : import pyaudioconvert as pac In : pac. wav > python Python 3.6.5 ( default, , 05 : 46 : 30 ) Type 'copyright', 'credits' or 'license' for more information IPython 6.4.0 - An enhanced Interactive Python. Maybe I have a whole folder of WAVS that need converting. wav Input File : 'example_16bit_16k_1ch.wav' Channels : 1 Sample Rate : 16000 Precision : 16 - bit Sample Encoding : 16 - bit Signed Integer PCM Converting Directory of WAVs wav Input File : 'example_24bit_48k_2ch.wav' Channels : 2 Sample Rate : 48000 Precision : 24 - bit Sample Encoding : 24 - bit Signed Integer PCM #we prefer 16-bit 16kz mono for our systems, let's use python > import pyaudioconvert as pac > pac. We will use Sox until we find a fast and efficient way to convert reliably in python RequirementsĮxample Usage Converting Single WAVs #let's start with a 24bit 48kz audio wav 2 channel wav > soxi example_24bit_48k_2ch. Print ("Number of frames",obj.Simple utility to convert audio from one form to another (via sox). Print ( "Frame rate.",obj.getframerate())
Print ( "Sample width",obj.getsampwidth()) Print( "Number of channels",obj.getnchannels()) Rewind the file pointer to the beginning of the audio stream.įollowing code reads some of the parameters of WAV file. Reads and returns at most n frames of audio, as a bytes object. Returns a namedtuple() (nchannels, sampwidth, framerate, nframes, comptype, compname), equivalent to output of the get*() methods. Returns compression type ('NONE' is the only supported type). Returns number of audio channels (1 for mono, 2 for stereo). Obj.close() Wave_read object methods close()Ĭlose the stream if it was opened by wave module. Write audio frames and make sure they are correct.įollowing code creates a WAV file with random short integer bytes of 99999 seconds duration. At the moment, only compression type NONE is supported, meaning no compression.Īccepts parameter tuple (nchannels, sampwidth, framerate, nframes, comptype, compname) Set the compression type and description. Wave_write object has following methods close() obj = wave.open('sound.wav','wb')Ī mode of 'rb' returns a Wave_read object, while a mode of 'wb' returns a Wave_write object. The mode can be 'wb' for writing audio data or 'rb' for reading. The function needs two parameters - first the file name and second the mode. This function opens a file to read/write audio data. The file is opened in 'write' or read mode just as with built-in open() function, but with open() function in wave module wave.open()
The bits-per-sample and PCM/float will be determined by the data-type. To write multiple-channels, use a 2-D array of shape (Nsamples, Nchannels).
The functions in this module can write audio data in raw format to a file like object and read the attributes of a WAV file. A 1-D or 2-D NumPy array of either integer or float data-type. The wave module in Python's standard library is an easy interface to the audio WAV format.
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