9/14/16 edit: (trying to find a good place to put this).., Since Nyquist and audacity are known for its wonderful waveform generators such as the DTMF, tone, as well has the handy dandy Nyquist prompt, was just wondering if anyone could give some programming via an Audio frequency shift keying (such as used in packet radio and such)
there are any options of doing so, but the two below are the most common ways to do it.
1. with varying frequency boxes for each of the binary 1s and 0s (mark and spaces),
2. The frequencies can have various cycles per shift
3. and the 1s and 0s can be put into an endless scrolling text box, entering as many as you want which can generate the AFSK tones at those desired frequencies.
4. There should also be an option of gaussian filtering, which can make transistions smoother between shifts, and remove harmonics.
Or, since AFSK is generated traditonally via a binary pulse coded wave, modulated a bit, with some amplitude cutting or whatever the causes, can also generate AFSK tones. This means the resulting waveform is modulated via a modem, making it much easier.
ill try to provide pictures for option 1, as long as my computer can co-operate with displaying them in these forums.
Finally, since I seem all over the place, i'm trying to be as directive as I can on this so it makes sense.
NOTE: I am using LISP for this one, not SAL.
Last edited by weldo5
on Wed Sep 14, 2016 10:46 am, edited 4 times in total.