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thetechprepper
36 lines
930 B
Bash
Executable File
36 lines
930 B
Bash
Executable File
#!/bin/bash
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#
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# Author : Gaston Gonzalez
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# Date : 13 October 2025
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# Purpose : Audio settings specific to the FX-4CR
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#
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# Preconditions
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# 1. Supported audio interface is connected and properly detected
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#
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# Postconditions
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# 1. ALSA settings set on ET audio device
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usage() {
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echo "usage: $(basename $0) <ET audio card> <ET device name>"
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}
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if [[ $# -ne 2 ]]; then
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usage
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exit 1
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fi
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AUDIO_CARD=$1
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ET_DEVICE_NAME=$2
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# Unmute the PCM and set the volume to 21% to get the full output power. This value is
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# dependent on the settings defined for the FX-4CR in the et-radio notes.
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amixer -q -c ${AUDIO_CARD} sset 'PCM' 31% unmute
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# Set "L/R Capture" to 55%. Adjust if you can't decode received audio.
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amixer -q -c ${AUDIO_CARD} sset 'Mic' 67% unmute
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# Disable Auto Gain Control
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amixer -q -c ${AUDIO_CARD} sset 'Auto Gain Control' mute
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et-log "Applied amixer settings for audio card ${AUDIO_CARD} on device ${ET_DEVICE_NAME}"
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