Accessing the Microphone in Python

My laptop has a microphone in it. Is th开发者_运维百科ere any method of obtaining numbers in Python from it? For example pitch, volume, or the duration of a noise. I'm trying to use ambient noise to create random numbers.

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Accessing the amplitude is easy. Depending on the plattform your app is running on you can use a framework like http://people.csail.mit.edu/hubert/pyaudio/ or http://pyalsaaudio.sourceforge.net/pyalsaaudio.html

to access the the pitch you will need a framework that performs a fft-analysis like the scipy/numpy package