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13
README.md
13
README.md
@@ -3,6 +3,7 @@
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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 Filter
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- Stereo
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- Polar Stereo
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- SCA
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@@ -33,17 +34,7 @@ Done!
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## CPU Usage?
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Should run completly fine on a pi 5, right now with the preemp and rds2, on a pi 3b, its 25%-27%
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## Recommendations
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use a lpf, for example swh-plugins's lowpass_iir, for example:
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```bash
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pactl load-module module-null-sink sink_name=FM_Audio rate=48000 # this goes to fm95
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pactl load-module module-ladspa-sink sink_name=FM_Audio_lpf sink_master=FM_Audio plugin=lowpass_iir_1891 label=lowpass_iir control=15000,6 rate=48000 # use 4 poles minimum, i recommend 6
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pactl load-module module-loopback source=radio_audio.monitor sink=FM_Audio_lpf rate=48000 # from the apps to the filter
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```
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Should run completly fine on a pi 5, right now with the preemp and rds2, on a pi 3b, its 50-70% (without lpf its more like 25%-27%)
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## Other Apps
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@@ -5,7 +5,7 @@
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#include "constants.h"
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#include "oscillator.h"
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#define LPF_ORDER 7
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#define LPF_ORDER 10
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typedef struct
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{
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