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copied!<p>If you are using LINUX, you can use <a href="http://larsimmisch.github.io/pyalsaaudio/" rel="noreferrer">pyALSAAUDIO</a>. For windows, we have <a href="http://people.csail.mit.edu/hubert/pyaudio/" rel="noreferrer">PyAudio</a> and there is also a library called <a href="http://code.google.com/p/pygalaxy/wiki/SoundAnalyse" rel="noreferrer">SoundAnalyse</a>.</p> <p>I found an example for Linux <a href="http://ubuntuforums.org/showthread.php?t=500337" rel="noreferrer">here</a>:</p> <pre><code>#!/usr/bin/python ## This is an example of a simple sound capture script. ## ## The script opens an ALSA pcm for sound capture. Set ## various attributes of the capture, and reads in a loop, ## Then prints the volume. ## ## To test it out, run it and shout at your microphone: import alsaaudio, time, audioop # Open the device in nonblocking capture mode. The last argument could # just as well have been zero for blocking mode. Then we could have # left out the sleep call in the bottom of the loop inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK) # Set attributes: Mono, 8000 Hz, 16 bit little endian samples inp.setchannels(1) inp.setrate(8000) inp.setformat(alsaaudio.PCM_FORMAT_S16_LE) # The period size controls the internal number of frames per period. # The significance of this parameter is documented in the ALSA api. # For our purposes, it is suficcient to know that reads from the device # will return this many frames. Each frame being 2 bytes long. # This means that the reads below will return either 320 bytes of data # or 0 bytes of data. The latter is possible because we are in nonblocking # mode. inp.setperiodsize(160) while True: # Read data from device l,data = inp.read() if l: # Return the maximum of the absolute value of all samples in a fragment. print audioop.max(data, 2) time.sleep(.001) </code></pre>

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