PC Spectrum Analyser?


Is it possible to turn a PC in to a spectrum analyser without spending too much money? I was hoping it would be possible to connect a good linear mic to the input of a sound card, and to do the rest in software. So:

- Does anyone know of good, real time, cheap or reasonably priced spectrum analysis software for sound that will run on a PC?

- What would be a reasonably priced good microphone that is linear in the audible spectrum?

BTW, I do also have a 20Mhz dual trace osciliscope here, but to the bext of my knowledge there is no way to turn that in to a spectrum analyser for cheap... Seems like with a fast, sweepable filter that should not be too hard to do though?

Niels.
njonker

Showing 1 response by sean

There is a program called "Spectra-Lab" or something of that sorts. I have used it briefly and it is quite versatile. Can't speak for how much it costs though as it was someone else's computer. As to finding a microphone that is quite excellent for the money, try contacting Old Colony Sound Labs. They have what is called "Mitey Mic" and they are on the second version of this. It is very linear and was designed by Joe D'Appolito if memory serves me right. Once you've gotten a good mic, you'll have to invest in a good sound card. If you've ever looked at the frequency response chart or specs for a typical "sound blaster" type of card, you'll realize that it is FAR, FAR below what you would want to do the job. Sean
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