Tuning Quiet for Reliable Low Bitrate Whisper

[theronic]

I want to broadcast a very low bitrate of 16-32 bits per second for source identification (as opposed to large data transmission), ideally continually, while staying as inaudible as possible. Which settings should I be tuning?

Have you explored lower-end bass frequencies for this purpose, perhaps infrasonic? And could I consider stretching a symbol over a much wider bandwidth at a low energy to ensure delivery?

(My background is systems & signals, but haven't done much modulation in a while.)

[sheab]

@brian-armstrong if you have time, would really appreciate an answer :). Is it possible to do this with a quiet-profile / changing parameters? If not, why? Thanks!

[brian-armstrong]

I have experimented with this some but it requires a new mode of modulation that's not currently in quiet. I have a branch that adds the new mode, and I should look into merging it in. In general the answer for why something isn't possible is that I have a day job and can only work on this in my spare time :)

[sheab]

Haha I understand. Thanks anyway for quiet - it's such a cool library. If you merge / publicize that branch please let us know :)

[sloandnerdy]

Hi @brian-armstrong, were you ever able to get this branch in? I was looking and I didn't see it.

Thank you

[mnm364]

He may be referring to this, tho not sure... https://github.com/quiet/quiet-beacon