For my senior design project, we're creating an acoustical test chamber that will measure the frequency and the sound pressure of the electrical device that is put in the chamber. The chamber won't be big, 1m X 1m X .5m at most. Also, we plan on measuring only the sounds that human ear can detect. My job is to select microphones, collect data and display it via MATLAB. I plan on using multiple sound cards as ADCs, so I will connect the microphones to the computer directly. We only have $200 budget for the whole project. I was wondering what types of microphones and sound cards (I might be able to get the sound cards from the school, but I'm not sure if they'll be good enough) I can use.
Thanks a lot!