Yan ) writes:
Hello,

how do I decode sideband signals using my PC ? I want some DSP based
BFO or some filter...

I have been looking at many software but none seem to offer this
functionnality.

Thanks !

You do realize it won't happen unless you actually modify the receiver?

There's no way you can do anything about an SSB signal after it's gone
through an AM detector. At that point, it's a completely different
signal, and there's no way you can demodulate it.

The only way you could use your sound card for this is if you tap
off the IF signal from the receiver, ie before the AM detector, and
then only if your soundcard can handle those relatively high frequencies (or
you add another conversion stage between the tap off point of the receiver
and the sound card.

Of course, if you're talking about audio filtering, the soundcard should
be able to do that. And there are various programs around for using
soundcards to decode exotic data transmissions, like CW (not so exotic)
or SSTV or whatever. But these are operating on the audio signal, and
virtually all would require an SSB receiver in the first place.

Michael