首先我们需要从网上下载两个模块：pymedia和scipy（或者用numpy也可以）
官方下载地址如下，国内搜索可以有得下载，看清楚你的py版本：
pymedia地址:
http:///projects/pymedia/files/pymedia/
scipy地址：
http:///scipy-superpack/
SciPy是一个开源的Python算法库和数学工具包。
SciPy包含的模块有最优化、线性代数、积分、插值、特殊函数、快速傅里叶变换、信号处理和图像处理、常微分方程求解和其他科学与工程中常用的计算。与其功能相类似的软件还有MATLAB、GNU Octave和Scilab。
重点是pymedia：
Pymedia 是个 C/C++/Python 的多媒体模块，可以对包括 mp3/ogg/avi等多媒体格式文件进行编码解码和播放，基于 ffmpeg 提供了简单的 Python 接口。
PyMedia was built to be really simple and flexible at the same time. See tutorial for example. It allows you to create your own mutimedia applications in a matter of minutes and adjust it to your needs using other components. Python language is choosen because of simple semantics, complete and reach set of features.
pymedia help:
http:///docs/pymedia.audio.sound.html
http:///
在maya里面我利用pymedia播放mp3或者wav的常用音频文件，pymedia调用类来构建一个音频的object,利用里面的构造函数 return frameRate 和 frameNumber 还有voiceWide,输出的声音数据是二进制代码，我利用 scipy或者numpy把它转化人类可读数据格式，其中输出为channels声道，我随便挑选其中一个，然后写出文档，接着用MAYA读取，但是 maya的frameRate和pymedia输出是不一样的，所以我按比例进行了转换，转换成maya可读的帧率。接着就可以在表达式里面进行数据控制了。
PS:由于振幅输出是比较难控制，最好利用maya的linstep()*emitter来控制比较精确，不然声音数据是十分敏感的
Installation:
"Pymedia is a Python library for accessing and manipulating media files. It makes audio and video playback/creation a snap for even a newcomer to programming." There is a deb installer available for pymedia 1.3.5 but not for 1.3.7 So I decided to write this howto.
First install all the dependencies:
sudo apt-get install python-dev libogg-dev libvorbis-dev liblame-dev libfaad2-dev libasound2-dev python-pygame
(Pygame is not really necessary, but recommended.)
Extract a download of pymedia-*.tgz and open a terminal in the extracted folder, so we can build pymedia:
python setup.py build
This should display:
Using UNIX configuration...
OGG : found
VORBIS : found
FAAD : found
MP3LAME : found
VORBISENC : found
ALSA : found
Continue building pymedia ? [Y,n]:
If everything is found press Y
Finally install pymedia:
sudo python setup.py install
Test if pymedia installed correctly by typing this at the python shell:
import pymedia
==================
Recently, I needed to use pymedia, for some audio and video encoding. The problem though, is that pymedia was nowhere to be found in the Ubuntu Hardy Heron package repository, and the only .deb installation candidate from the pymedia website was for an older version of pymedia and Python 2.4. Not wanting to run an old version and having Python 2.5 as a requirement, I needed to compile the package myself–no easy task, it turns out.
Step 1. Get pymedia
wget http://internap.dl./sourceforge/pymedia/pymedia-1.3.7.3.tar.gz
tar xzvf pymedia-1.3.7.3.tar.gz
cd pymedia-*
Step 2: Get the pymedia dependencies (as noted here).
sudo apt-get install python-dev libogg-dev libvorbis-dev liblame-dev libfaad-dev libasound2-dev python-pygame
Step 3. Get GCC 3.4 (pymedia will not compile with GCC 4.0)
sudo apt-get install gcc-3.4 g++-3.4
export CC=gcc-3.4
Step 4. Build/compile pymedia
python setup.py build
Step 5. Be a good Ubuntu user with checkinstall
Checkinstall is great because it installs the package as a .deb file.
sudo apt-get install checkinstall
