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Diffstat (limited to 'speakerWatchdog.sh')
| -rwxr-xr-x | speakerWatchdog.sh | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/speakerWatchdog.sh b/speakerWatchdog.sh deleted file mode 100755 index 2597eaf..0000000 --- a/speakerWatchdog.sh +++ /dev/null @@ -1,50 +0,0 @@ -#! /bin/bash -# Workaround for stupid 'powersave' 'feature' of Creative Speakers -# -# SJP 11 Dec 2021 -# -# Record a snippet of default stream: - -# 0 rec -d -n trim 0 .1 stat - -# rec sox in record mode -# -d default input -# -n direct output to /dev/null -# trim 0 .1 duration 0.1 second -# stat write info about the audio stream -# 2>&1 redirect stderr to stdout -# | pipe -# grep finds this line: Minimum amplitude: 0.000000 -# | pipe -# awk ruturns just the third word (the number) -#echo hello $USER | systemd-cat -t AlexySayle -p warning -maxAmp=$(rec -d -c1 -n trim 0 .1 stat 2>&1 | grep 'Maximum amplitude' | awk {'print $3'}) -echo Max Amplitude = $maxAmp -if [ "$maxAmp" == "0.000000" ]; then - # if Max amplitude = 0 then we have silence! - if [ -f "/tmp/silencemarker" ] ; then - # There was silence last time we checked, so play the tone - echo Play the sound - play -nq synth 1 sine 40 fade 0.2 0 - rm /tmp/silencemarker - else - touch /tmp/silencemarker - fi -else - if [ -f "/tmp/silencemarker" ] ; then - rm /tmp/silencemarker - fi -fi - -systemd-run --user --on-active=10m /usr/local/bin/speakerWatchdog.sh - -#to generate a tone that is not audible: -#play -n synth 1 sine 40 fade .2 0 -# -# play sox alias -# -n dummy input file -# synth synthesise a sound -# sine sine wave [the default, so not strictly necessary] -# 40 Hz -# fade fade in from zero volume to max volume over 200 msec. -# '0' says fade out at end over same period. |