[Jack-Devel] Using USB sound card with Jack

[Benny Alexandar]

>> The simple way to test ajbridge is to measure the delay
of a loop through both soundcards, using e.g. jack_delay.

How to measure the delay between two sound cards ?
What does the jack_delay measures, the delay between
what and what ?

Any documentation on how to use the jack_delay for measuring ?

-ben


________________________________
From: Jack-Devel <jack-devel-bounces at lists.jackaudio.org> on behalf of Fons Adriaensen <fons at linuxaudio.org>
Sent: Wednesday, January 17, 2018 3:23 AM
To: jack-devel at lists.jackaudio.org
Subject: Re: [Jack-Devel] Using USB sound card with Jack

On Tue, Jan 16, 2018 at 04:36:54PM +0000, Benny Alexandar wrote:

> I want to test how zita-ajbridge behaves when there is a drift in clock.

It will just track the drift and compensate for it.

> Any idea how to artificially create clock drift for testing purpose.

You don't need to, no two sound cards will have exactly the
same sample rate if they are not synced.

The simple way to test ajbridge is to measure the delay
of a loop through both soundcards, using e.g. jack_delay.

There are some test results in the LAC paper as well.

Ciao,

--
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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