?Mumble can also be configured to echo audio back (from local or remote) through the Configure -> Settings -> Audio Output -> Loopback test. On top of this above technique, many conferencing services have built-in echo tests. Naturally, it is better to run such a test with headphones. Watch out for feedback! Be ready to lower all volumes in case the microphone picks up the output from the loudspeakers. To make the change permanent, add the following line to your ~/.config/pulse/default.pa: While latency should be low, it should be sufficient to get a feeling of the sound quality as you will hear yourself speak in the microphone. The module will show up in the Recording tab of the pavucontrol program, where the source and volume can be configured. If you are unsure about your microphone setup, you can hear the input from the microphone in real-time by enabling the loopback module ( source): Sed 's/ autospawn = yes/autospawn = no/' ~/.config/pulse/nf Be sure to uncomment the line by removing the leading semicolon.Īlternately, to do both the copy and the edit in one step, just cut and paste this into the command line: Use your favorite editor to change the line which says autospawn = yes to autospawn = no. If you want to be able to kill the daemon without it respawning, make these changes:-Ĭopy the client configuration file to ~/.config/pulse Load-module module-udev-detect tsched = 0Īdd or uncomment the line in /etc/pulse/nfĪ pulseaudio client program will automatically run the pulseaudio daemon if there isn't one running already.
If a low-power machine stutters (audio breaks up), you can try adding the following to /etc/pulse/nf: The trick, (for now?), is to bring up the alsamixer (or alsamixergui) and the audio output can be switched from the read of the card to the front-panel as well as the mic input. CMI8788 ) exposed by ALSA and playing with the pulseaudio interface (pavucontrol) won't bring happiness. lsof /dev/snd/* will help identify processes you may need to kill off before PulseAudio will use your audio device.Īs of wheezy, for some reason, pulseaudio does not see the toggle feature of some cards (i.e. It will therefore skip devices already in use by other applications, eg. Pulseaudio, in its default configuration, will likely want exclusive access to the hardware. This is probably unnecessary overkill, but might help some people. If Pulseaudio does not correctly detect your input / output devices ("sources" and "sinks" in Pulseaudio parlance), you can try deleting the configuration files and restarting pulseaudio. Missing playback devices or audio capture Sound level is low or suddenly becomes too loud Interrupting play in Amarok when running SkypeĬomment out or remove the line in the /etc/pulse/default.pa Or on systems that do not use systemd (including Debian 8 and earlier): To reread the config files ~/.config/pulse/nf and /etc/pulse/nf, one can restart pulse: It uses socket activation, which means Pulseaudio will start automatically when an application tries to use it. Since Debian 9, Pulseaudio is managed by the per-user instance of systemd. To enable all channels, edit the file /etc/pulse/nf: uncomment default-sample-channels (ie remove the semicolon at the beginning of the line) and set it to 6 if you System 5.1 or 8, if your system is 7.1.Īfter making the changes, restart Pulseaudio.
PulseAudio has no default settings for surround sound support. Many people have a multi-channel sound cards, but use the speakers for the two channels. Often such programs will not mention Pulseaudio and will simply be called something generic like "Sound Settings".
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However, you may not need to install pavucontrol as most desktop environments have their own control panels for configuring Pulseaudio. It also allows you to change "mixer" settings like headphone output, mic level, input device, and stereo versus surround sound profiles. Pavucontrol, an optional package for pulseaudio, allows you to make volume adjustments (entire system or per application). If the sound is registering in the vu vumetre of that program, then it is being routed through the pulse system. This can be checked by with pavucontrol (in the pavucontrol package). Pulseaudio becomes the default when the package is installed. If you need to install it manually, apt-get install pulseaudio should "just work" in every release since Debian 6 (Squeeze).
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