Update sound.md

en/sound.md

@@ -1 +1,37 @@
+# Sound setup & tweaks
 
+### Setup
+
+Initial setup
+```
+cli -s .audio.enabled true
+cli -s .audio.codec opus
+cli -s .audio.srate 48000
+cli -s .audio.volume 40
+cli -s .audio.outputEnabled true
+cli -s .audio.outputVolume 80
+cli -s .audio.speakerPin 64
+```
+### Tweaks
+
+### Usefull things
+1. Play file to camera`s speaker remotly (test.pcm - 48k pcm file)
+```
+curl -u root:1qaz2WSX --data-binary @test.pcm http://192.168.70.232/play_audio
+```
+2. Play file to camera`s speaker from camera (usefull for debugging purposes, e.g. testing motion detection)
+
+first, copy file to the camera
+```
+scp ready_48k.pcm root:12345@192.168.1.10:/usr/lib/sounds/ready_48k.pcm
+```
+then play it
+```
+curl --data-binary @/usr/lib/sounds/ready_48k.pcm http://localhost/play_audio
+```
+note: access to web inerface via localhost don`t need an authorization
+
+3. Listen audio from camera`s microphone on PC
+```
+ffplay -ar 8000 -ac 1 -f s16le http://root:1qaz2WSX@192.168.70.232/audio.pcm
+```