2 Aug
2010
2 Aug
'10
6:48 a.m.
On Sun, Aug 1, 2010 at 3:08 PM, James Morris <james(a)jwm-art.net> wrote:
On 1 August 2010 19:37, Arvind Venkatasubramanian
<mdu.arvind(a)gmail.com>
wrote:
James:
I finally got a detailed document at:
http://linux.die.net/man/1/jackd
<http://linux.die.net/man/1/jackd>This will help me get started with Jack
scripting. Thanks for your patient answers.
-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.
My Intel sound card supports sampling rates of 8kHz and 16 kHz. I
confirmed
this by looking into Audacity device ID setting.
I know that I am asking
some basic stuff but my problem is that I do not find the right
documentation for solving my problems.
Typing in the console:
man jackd
will help you identify the nature of some of the command line options
for jack, as well as give you some clues for matching them to the tabs
within QjackCTL.
I'm no expert, and all I've ever tried for getting the best (lowest)
latency is by experimenting with seeing how low I can go with the
Frames/Period setting in QjackCTL which is the -p or --period setting
on the command line. If it works and no x-runs occur, then...
...it works :-)
A method of identifying which command line option to Jack relates to
which setting in QjackCTL is by changing a setting in qjackctl and
stop/starting Jack through qjackCTL while watching the messages log.
James.
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