Re: [LAU] Testing JACK and PA latency

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To: <linux-audio-user@...>
Date: Thursday, September 19, 2013 - 9:42 am

On Thu, Sep 19, 2013 at 06:46:11PM +1000, Patrick Shirkey wrote:

> jack_system (in) -> pa_source (in) -> audacity (in) -> audacity (out) ->

Easy using jack_delay.

1. Measure the round-trip latency of your sound card (with an
external analog loop).

2. Measure

jack_delay -> pa_source -> audacity -> pa_sink -> jack_delay.

3. If pa_source and pa_sink are a single Jack client (probably not),
subtract one period from the result of (2).

4. Add the two values.

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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Messages in current thread:
[LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 8:46 am)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Thu Sep 19, 9:42 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 10:04 am)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Thu Sep 19, 10:46 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Wed Sep 25, 1:32 pm)
Re: [LAU] Testing JACK and PA latency, Len Ovens, (Thu Sep 19, 2:01 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 2:21 pm)
Re: [LAU] Testing JACK and PA latency, Len Ovens, (Thu Sep 19, 11:48 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Fri Sep 20, 12:57 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Fri Sep 20, 8:59 am)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Fri Sep 20, 10:31 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Fri Sep 20, 10:41 am)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Fri Sep 20, 3:13 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Fri Sep 20, 6:07 pm)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Fri Sep 20, 7:08 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Sat Sep 21, 11:27 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 3:40 pm)
Re: [LAU] Testing JACK and PA latency, Fons Adriaensen, (Thu Sep 19, 12:31 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 12:35 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 10:26 am)
Re: [LAU] Testing JACK and PA latency, Hartmut Noack, (Thu Sep 19, 9:20 am)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 9:39 am)
Re: [LAU] Testing JACK and PA latency, Len Ovens, (Thu Sep 19, 1:49 pm)
Re: [LAU] Testing JACK and PA latency, Patrick Shirkey, (Thu Sep 19, 2:04 pm)