1.2 KiB
FMTools
FMTools is a repository of apps you can use to make your FM broadcast better, pirate or not this will help you if you don't have something, maybe you want a better stereo encoder? SCA? or even went crazy and decided to do quadrophonic? We have what you need, for RDS just use MiniRDS
STCode
STCode is a simple stereo encoder for FM, it uses pasimple and math to:
- Calculate mono signal ((L+R)/2)
- Generate the stereo pilot in phase to the stereo subcarrier
- Generate the stereo diffrence signal using DSB-SC ((L-R)/2)
All that in about 3.5% cpu usage on a RPI-5 (lpf makes it 10, but stereo tool has 3 threads which do 100% cpu usage anyway, one 200)!
Also nearly no latency, not like Stereo Tool (or mpxgen which doesn't even work)
As far as i've tested it (29-31 december) it's been fine but after a fix it was great, so i'd redecommend you
SCAMod
SCAMod is a simple FM modulator which can be used to modulate a secondary audio stream, has similiar cpu usage and latency as STCode
Has a fine quality, but as it goes for 12 khz fm signals
QDCode
QD code is a FM quadrophonic encoder, following the Dorren standard
I haven't tested this, but i'm scared, i don't have a decoder anyway