I'm not sure how Pulseaudio and ALSA are related, but I know some softwares
require pulseaudio to work, e.g. Skype.



2016-09-19 13:10 GMT-03:00 Aere Greenway <a...@dvorak-keyboards.com>:

> On 09/19/2016 06:50 AM, Stefan Kleyer wrote:
>
> Hi,
>
> as far as I know, ALSA is working, but ALSA can only accept audio input
> from one stream. So
> if e.g. you are playing music via media player, Firefox can't play a
> YouTube video with audio.
>
> Pulseaudio is kind of a wrapper for ALSA, that allows the OS to play sound
> from multiple
> sources and to multiple sound devices. So it is:
>
> audio source (e.g. VLC) -> Pulseaudio -> ALSA -> sound device
>
> So you need ALSA in order to have sound. You can alternatively try JACK (
> http://
> jackaudio.org/) instead of Pulseaudio but it's specifically made for
> audio professionals such
> as DJs etc. Afaik ALSA is in Linux the "base of sound" if you say so.
>
> Please correct me, if I'm wrong, but that's what I get.
>
> Best regards,
> Stefan
>
> *Gesendet:* Montag, 19. September 2016 um 14:08 Uhr
> *Von:* "Marlon Ng" <guik...@gmail.com> <guik...@gmail.com>
> *An:* lubuntu-users@lists.ubuntu.com
> *Betreff:* [lubuntu-users] always have to use pulseaudio volume control?
> Hello guys.  I was just wondering if installing Pulseaudio Volume Control
> is really necessary to have sound in a Lubuntu system.
>
> The default is ALSA Mixer, correct?  When I was started using Lubuntu and
> there was no sound, someone told me to install Pulseaudio, and I have been
> using Pulseaudio ever since, it is one of the first things I install in
> order to have sound.
>
> My question is, is it really necessary? Isn't there a way to make ALSA
> mixer work? Because if it doesn't work, then why is it always bundled with
> Lubuntu?
>
> Thanks!
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>
>
> JACK (Jack Audio Connection Kit) is a good thing to have, being low
> overhead, and it lets you connect arbitrary audio and MIDI devices.  It's
> (to me) the "ASIO device driver" of the Linux world.
>
> Unfortunately (as it is with ASIO in Windows), it is hard to make it
> co-exist well with ordinary (ALSA) devices.
>
> PulseAudio Volume Control gives you a better GUI interface (than ALSA
> mixer) for controlling your audio devices.
>
> --
> Sincerely,
> Aere
>
>
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