Re: Audio application

Virgil -

 I wrote a 512 point FFT routine a few years ago for Forth and it worked
reasonably well in real time even on slow 6811 based systems. I'll see if I
can dig it up.

Brian

SFTalk Group..
I am desireous to utilize the Sound Card in a application for my hobby
(Amateur Radio). I want to process the audio from a receiver with a FFT
algorithm and use SwiftForth to view the real-time audio spectrum. In
addition, I want to be able to click on an area of interest and set
adjustable digital filters. For a little background, take a look at the
following: http://www.arrl.org/tis/info/pdf/9402qex2.pdf .. This explains
the algorithms needed. My question to the group is has anyone interfaced to
the sound card, or developed spectagraph software using SwiftForth ? What
about real-time FFT ? It looks like the API for the sound card is DirectX
>from Microsoft. That is all I can find for now. Any comments on the subject
appreciated.
Virgil
Received on Thu Jan 11 2001 - 19:18:08 PST