Microphone and its working condition

Hi,
Im working with the AVI Files for a project which records real time video and audio. I was wondering if there is something that could help me to determine the health of Mic and Camera, without actually looking at the Video or listening to the Audio.
(May be I can parse through the AVI file for header chunks or Data chunks, but I am not sure about what I should be looking for )

Thanks!
Abilash G. Sanam

If you can get a hold of the WAV data (Amplitude over time) you can check for noise by just looking how closely the wave pattern looks random. Low noise should appear more smooth. So if you take an average for every 50 data points, all the points should be within a certain tolerance otherwise the confidence/health should go down.

Originally Posted by tgraupmann

If you can get a hold of the WAV data (Amplitude over time) you can check for noise by just looking how closely the wave pattern looks random. Low noise should appear more smooth. So if you take an average for every 50 data points, all the points should be within a certain tolerance otherwise the confidence/health should go down.

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Thank You Very much for your reply tgraupmann. I was trying to do something similar to what you have suggested, but since I am working on a embedded system, the solution was not feasible. Moreover I also need some help with the video data. It would be great to hear what you have to say in this regard.

Aryan