23 Jul
2004
23 Jul
'04
1:17 p.m.
Christian Klotz wrote:
hi, I currently try to analyse sound input (using microphone) and check if the sound contains a definite frequency range. so if there is a frequency range of 10,000 to 11,000 hz in there it should do a bang for example. So I tried a little bit with fft and tabwrite but at the moment I stuck. Does anyone of you have an idea how to solve the problem? thanks, cheers
yes, try fft and tabwrite....
to be honest: why not using a [bp~] for such a task ? if you really need fft's, be sure that you know that the signals coming out of [rfft~] are real and imaginary parts of a complex signal. since you need the amplitude of the complex signal you will have to calculate it yourself.
mfg.as.dr IOhannes