Hi,
I would suggest VC from LakeOfSoft, it being released at github for years now, i had the Enterprise version from before and there is one particular demo had being removed from (not added to) github:
http://lakeofsoft.com/vc/a_fbands.html
and on Github
https://github.com/lakeofsoft/vcp
This demo is not there, and i can't share it, also there is noting in it, except one needed line to build your demo or to use TunadspFFTControl
Code:
unavclWaveInDevice1.addConsumer(unadspFFTControl1.fft);
i used unavclWaveInDevice1 here but you need to find the suitable input device after understanding the VCP
package, it should satisfy all your needs.
But specially i would suggest to have a look at
https://github.com/lakeofsoft/vcp/bl...vc2/unaDSP.pas
This
unit has DTMF detector/decoder which is what you need, but of course need adjusting to for your own frequencies.
I tried this demo with the one line code above and the result in the screenshot ( i had to cough in the mic to make so many bands high ! )
