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becki:linux:sound
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| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
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becki:linux:sound [2015-09-14 11:29] becki [Dump audio to ogg vorbis file] |
becki:linux:sound [2020-06-23 07:22] (aktuell) becki |
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| ====== Linux Sound and Audio == | ====== Linux Sound and Audio == | ||
| + | |||
| + | {{tagtopic>linux +audio&rsort&order=modified}} | ||
| + | |||
| ===== Overview == | ===== Overview == | ||
| Zeile 67: | Zeile 70: | ||
| aplay -D hw:PCH /usr/share/sounds/KDE_Logout_new.wav | aplay -D hw:PCH /usr/share/sounds/KDE_Logout_new.wav | ||
| - | === Select Sound Card with mplayer == | + | === Permanently select default Sound Card == |
| - | Cli examples: | + | FIXME A good place to start is probably at ''/etc/asound.state'' |
| + | |||
| + | ===== Mplayer == | ||
| + | ==== Select output driver == | ||
| + | |||
| + | As of Slack 14.4 Pulse is active, but mplayer still uses Alsa as output. In order to avoid detours (see above), change this permanently to pulse by editing /etc/mplayer/mplayer.conf : | ||
| + | |||
| + | ao=pulse | ||
| + | |||
| + | Older CLI examples for alsa (before pulseaudio) | ||
| mplayer -ao alsa:device=hw=1 or | mplayer -ao alsa:device=hw=1 or | ||
| Zeile 76: | Zeile 88: | ||
| mplayer -ao alsa:device=hw=PCH.0 or | mplayer -ao alsa:device=hw=PCH.0 or | ||
| - | Or permanently by editing /etc/mplayer/mplayer.conf : | + | #/etc/mplayer/mplayer.conf: |
| ao=alsa:device=hw=1 | ao=alsa:device=hw=1 | ||
| - | === Permanently select default Sound Card == | ||
| - | |||
| - | FIXME A good place to start is probably at ''/etc/asound.state'' | ||
| - | ===== Mplayer == | ||
| ==== Steaming throuh Socks Proxy == | ==== Steaming throuh Socks Proxy == | ||
| Zeile 97: | Zeile 104: | ||
| mplayer -ao pcm <file>|<url> | mplayer -ao pcm <file>|<url> | ||
| - | ==== Dump audio to ogg vorbis file == | + | ==== Webcam viewing / testing == |
| <code> | <code> | ||
| - | mkfifo myrecord | + | mplayer tv:// |
| - | oggenc myrecord & | + | |
| - | mplayer -ao pcm:file=myrecord <file>|<url> | + | |
| - | rm myrecord | + | |
| </code> | </code> | ||
| - | This is useful for recording internet radio. | + | Source: http://www.linuxtv.org/wiki/index.php/MPlayer#Using_MPlayer_for_Webcam_Viewing |
| - | Note: Encoding directly to ogg seems to work only with mencoder using ''-lavcopts acodec=vorbis''. But mencoder doesn't seem to support stream URLS. | + | ==== Slave mode == |
| - | FIXME How to stop recording? ''sleep <seconds>; killall mplayer''? | + | http://www.mplayerhq.hu/DOCS/tech/slave.txt |
| - | Recording can also combined with proxy usage. Omit cache in this case: | + | ===== Mixer == |
| - | curl --socks5 localhost:1080 <url> | mplayer -quiet -nocache -ao pcm:file=myrecord - | + | As of Slack 14.2 Pulseaudio is included and activated by default. |
| - | FIXME Tests with direct downloads of ogg or mp3 stream using ''curl'' resulted in playable files as well! | + | CLI frontend: ''pamixer'' |
| - | ==== Slave mode == | + | GUI fromtend: ''pavucontrol'' |
| - | http://www.mplayerhq.hu/DOCS/tech/slave.txt | + | <note>It is **not** recommended to make ''/etc/rc.d/rc.pulseaudio'' runnable. Normally pulseaudio will start automatically as-needed with an instance per audio user.</note> |
| - | ===== Mixer == | + | ===== Bluetooth == |
| + | |||
| + | In order to channel audio from any source to an external speaker or headset via bluetooth, first make ''/etc/rc.d/rc.bluetooth'' runnable and start it as root. | ||
| + | |||
| + | Now start the ''blueman-manager'' GUI to connect to the remote device. | ||
| - | FIXME Slack comes with esound (apparently disabled). According to usr/doc/esound-0.2.41/README esound is deprecated. Whereas pulseaudio is available only on slackbuilds | + | The ''pavucontrol'' GUI allows you to route the sound to the according remote device. You might need to check the button "Set as fallback" for that output device. |
| - | ===== Attic == | + | ===== Attic / obsolete == |
| mixer: alsamixer (,rexima, amixer) | mixer: alsamixer (,rexima, amixer) | ||
becki/linux/sound.1442230153.txt.gz · Zuletzt geändert: 2015-09-14 11:29 von becki
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