| pcm.ladspa { | |
| type ladspa | |
| slave.pcm "plughw:1,0" | |
| path "/usr/lib/ladspa" | |
| capture_plugins [ | |
| { | |
| label lsFilter | |
| input { | |
| controls [ 1 2200 ] | |
| } | |
| } | |
| { | |
| label mbeq | |
| input { | |
| # bands: 50hz, 100hz, 156hz, 220hz, 311hz, 440hz, 622hz, 880hz, 1250hz, 1750hz, 25000hz, 50000hz, 10000hz, 20000hz | |
| controls [ -10 0 0 10 20 20 20 30 20 20 0 0 -10 -10 -20 ] | |
| } | |
| } | |
| { | |
| label amPitchshift | |
| input { | |
| controls [ 1.06 ] | |
| } | |
| } | |
| { | |
| label ringmod_1i1o1l | |
| input { | |
| controls [ 2 30 1 0 0 0 ] | |
| } | |
| } | |
| ] | |
| } |
Based heavily on Penguin Producer's instructions I tweaked some settings and played with some settings. We use alsaloop for low latency audio loopback, by sourcing from plug:ladspa we get the input (microphone) filtered but other sound effects can play unmodified.
This runs fine on the Raspberry Pi with an external USB sound card.
| #!/bin/bash | |
| alsaloop -c 1 --rate=16000 -A 2 -b -S 1 -C plug:ladspa -P hw:1 -t 50000 |
