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LIRC - Linux Infrared Remote Control
https://www.lirc.org/audio-alsa.html
LIRC - Linux Infra-red Remote Control. Using the ALSA audio IR receiver driver. Hardware. This driver supports the IR-audioIR receiver module. A more detailed description of how to build and set up the hardware can be found by following the link. How to use ALSA.
lirc-audio_alsa-for-openwrt/Makefile at master · …
https://github.com/probonopd/lirc-audio_alsa-for-openwrt/blob/master/Makefile
define Package/lirc/description: LIRC is a package that allows you to decode and send : infra-red signals of many (but not all) commonly used : remote controls. This package contains only lircd and lircd.conf! tested drivers-----ok: userspace,accent,act200l,act220l,adaptec,alsa_usb,animax,asusdh, …
Simplest LIRC alsa-audio receiver – Stefan's blog
https://ststefanov.eu/?p=142
On resistor appears voltage change which is fed to sound card input through DC blocking capacitor. In result following waveforms can be seen when use sound recording software (for example Audacity : arduino , audio alsa , infrared , ir , ir remote , lirc , remote .
LIRC - Linux Infrared Remote Control
https://www.lirc.org/html/audio.html
Connect the circuit to the sound-card and set the volume to the maximum level. Start lircd, the -d flag can be used to select the audio device and/or sample-rate, the syntax is api:device[@samplerate[:latency]] or @samplerate[:latency]. Examples: lircd -d ALSA:default lircd -d ALSA:default@48000 lircd -d ALSA:default@48000:0.02 lircd -d @48000
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