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https://github.com/radio95-rnt/fm95.git
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51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
# fm95
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FM95 is a audio processor for FM, it does:
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- Pre-Emphasis
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- Low Pass Filtering
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- AGC
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- Stereo
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- BS412 (mpx power limiter, simplest implementation ever)
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Supports these inputs:
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- Audio (via Pulse)
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- MPX (via Pulse, basically passthrough, i don't recommend this unless you have something else than rds or sca to modulate, you could run chimer95 via here, also you have 5% allowed here by default to be guarenteed with no clipping, change how much headroom you have with the headroom option)
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- RDS (via Unix Socket, expects RDS bits without differential encoding with checkwords, rds95 is recommended here)
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and one output:
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- MPX (via Pulse)
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## How to compile?
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Note that you're required also to load submodules, if you don't know what that means, ask ChatGPT
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To compile you need `cmake`, `liquid-dsp` and `libpulse-dev`, if you have those then do these commands:
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```bash
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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!
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## CPU Usage?
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Should run completly fine on a pi 5, fine on a pi 3b (~30% cpu)
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## Other Apps
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FM95 also includes some other apps, such as chimer95 which generates GTS tones each half hour, and vban95 now which is a buffered VBAN receiver. And now also SCA generation was moved to sca95 from fm95!
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## Feature Requests
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In case you are missing something, you can create an issue, and if you actually do need the feature and can prove it, and also provide/tell how to test the feature - any feature is welcome to be implemented (though i never said when will it be done)
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## Usage of other projects
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The apps use inih by Ben Hoyt.
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