Great question. I asked this some time ago and was refered to the "audio toolbox", which was about $1000. More than I wanted to spend. But to answer your question there are inexpensive spectrum analyzers. HP works FFT spectrum analyzer at: http://www.hpw-works.com/ it's between $69 and $300 depending on options. Audua Speaker Workshop: www.audua.com. You can download an alpha product for free. Sample Champion is another that you can download a trial version for free at www.purebits.com. I wanted to do the same thing you are trying to do, but I can't find a linear microphone. Some of these programs have methods to calibrate the microphone for non-linearity, but if you don't have a flat source to do the calibration it's basically impossible. Hopefully, someone else will post some ideas on microphones or methods to calibrate them. If you get a set-up like this working, please post it--I'm sure many audiogoners would be interested.
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.
- 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.