[LAU] Jack - buffers V periods

Paul Davis paul at linuxaudiosystems.com
Thu Jan 18 00:05:40 UTC 2018


a JACK or ALSA "period" is what almost everything on windows and MacOS
calls a "buffer".

they do not have a term for what ALSA calls "a buffer" (the entire memory
space available for audio i/o, typically mmapped into the using process'
address space)

just about all modern audio interfaces use a double-buffer design. while
the application writes/reads to one buffer, the hardware reads/writes from
the other.

On Wed, Jan 17, 2018 at 6:58 PM, Will Godfrey <willgodfrey at musically.me.uk>
wrote:

> I'm getting a little confused when comparing our (Jack) buffer sizes with
> those
> discussed on Windows, Mac and general music groups.
>
> These latter never mention periods at all, and it's always frames per
> buffer,
> so when trying to make comparisons should I take buffers as 1:1 or should
> I be
> comparing their buffers to our periods?
>
> --
> Will J Godfrey
> http://www.musically.me.uk
> Say you have a poem and I have a tune.
> Exchange them and we can both have a poem, a tune, and a song.
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> https://lists.linuxaudio.org/listinfo/linux-audio-user
>
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