2 Aug
2010
2 Aug
'10
4:47 a.m.
On Sun, Aug 1, 2010 at 2:53 PM, Rui Nuno Capela <rncbc(a)rncbc.org> wrote:
On 08/01/2010 07:37 PM, Arvind Venkatasubramanian
wrote:
*To measure sound card latency by patching JDelay in qJackctl:*
*Irrespective* of changing different parameters combinations, I get the
following printed out in the terminal:
Signal below threshold...
Signal below threshold...
Signal below threshold...
2072.829 frames 43.184 ms Inv
2072.866 frames 43.185 ms Inv
2072.846 frames 43.184 ms Inv
2072.838 frames 43.184 ms Inv
2072.855 frames 43.184 ms Inv
2072.840 frames 43.184 ms Inv
2072.842 frames 43.184 ms Inv
2072.853 frames 43.184 ms Inv
2072.835 frames 43.184 ms Inv
2072.848 frames 43.184 ms Inv
The program does not seem to recognize the changes I made in the GUI
parameters settings.
How I did it:
1. I connected my sound card out to sound card in.
2. Then patched my JackDelay In to system caputre 1.
3. I patched playback 1 to JackDelay out.
Regards,
Arvind V
*Question on using QJACKctl:*
I was able to create some basic setting, load and read latency that gets
printed on the terminal. But what do the parameters on the setting tab
of console pop up mean? No soft mode, monitor, priority, time out etc
and the options tab. How do I use these options and tine tune them in
order to set the minimum feasible latency for the application that I
intend to develop? Above all, if the drop down menu options does not
allow me to choose lower sampling rates, what command do I use on the
CLI to do the setting. Or Do I need to edit QJACKctl's .conf file to
set lower sampling rates manually.
all options on the qjackctl setup settings dialog are mapped in a
one-to-one basis to jackd command line options. they are just presented
in a bland gui dialog for convenience.
cheers
--
rncbc aka Rui Nuno Capela