# 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? 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 (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 recommend this to you

Also i'd recommend to use the SSB version because it's more spectrum effiecent
but SSB has slightly more cpu usage

# PSTCode
This is a yet another version of a Stereo encoder, however for the OIRT band which is in use in Russia, Belarus and other countries

Haven't tested it nor plan to

# 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

# MonoPass
want to keep mono for a reason but have the lpf and preemphasis, do so

# How to compile?
To compile you need `cmake` and `libpulse-dev`, if you have those then do these commands:
```
mkdir build
cd build
cmake ..
make
```
Done!