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40 lines
1.5 KiB
Markdown
40 lines
1.5 KiB
Markdown
# FMTools
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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
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# STCode
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STCode is a simple stereo encoder for FM, it uses pasimple and math to:
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- Calculate mono signal ((L+R)/2)
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- Generate the stereo pilot in phase to the stereo subcarrier
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- Generate the stereo diffrence signal using DSB-SC ((L-R)/2)
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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)
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Also nearly no latency, not like Stereo Tool (or mpxgen which doesn't even work)
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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
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Also i'd recommend to use the SSB version because it's more spectrum effiecent
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but SSB has slightly more cpu usage
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# PSTCode
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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
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Haven't tested it nor plan to
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# SCAMod
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SCAMod is a simple FM modulator which can be used to modulate a secondary audio stream, has similiar cpu usage and latency as STCode
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Has a fine quality, but as it goes for 12 khz fm signals
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# MonoPass
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want to keep mono for a reason but have the lpf and preemphasis, do so
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# How to compile?
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To compile you need `cmake` and `libpulse-dev`, if you have those then do these commands:
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```
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mkdir build
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cd build
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cmake ..
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make
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```
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Done! |