<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<font size="+1">You know, Brett, I've had exactly the same thoughts -
if Ardour can calculate the latency, why can't it compensate for it?
And if it can, does it? I think you'd necessarily need to be monitoring
the track you're recording at a stage prior to it getting to
JACK/Ardour (ie directly out of the instrument or listening to the
guitar/amp itself) for it to work. Conversely, I suppose you could
ignore the latency altogether and simply record the track, making sure
you're not monitoring the recorded signal of the track you're
recording, and then simply move the newly recorded track back by an
amount equal to the latency...as long as you're not in a position
whereby you pick the string of a guitar but only hear the result later
it should work - can a developer comment on this?</font><br>
<br>
<br>
Brett Clark wrote:
<blockquote
id="mid_E4E0458546917E439DBBF36BB08807D80963E8_mail2_ciscoinc_com"
cite="mid:E4E0458546917E439DBBF36BB08807D80963E8@mail2.ciscoinc.com"
type="cite">
<pre wrap="">This can bring up another question(s). Im using a Delta 1010 and
use the hardware monitoring (its 'external' in Ardour), so would i
really care about latency? If im playing back 8 tracks while recording
a 9th track, doesnt Ardour compensate for that? Also, would a larger
latency reduce the load on the processor?
I currently try to keep the latency down, but these are questions
that have been lingering in my head.
Thanks
--Brett
________________________________
From: <a class="moz-txt-link-abbreviated" href="mailto:ardour-users-bounces@lists.ardour.org">ardour-users-bounces@lists.ardour.org</a> on behalf of Svend-Erik Kjær Madsen
Sent: Wed 9/19/2007 2:25 AM
To: <a class="moz-txt-link-abbreviated" href="mailto:martin.lynch@shaw.ca">martin.lynch@shaw.ca</a>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:ardour-users@lists.ardour.org">ardour-users@lists.ardour.org</a>
Subject: Re: [Ardour-Users] Howto firgure settings out
Hi Martin
Thanks a lot, I've found out that I only can use a limited set of
combinations that's listed in my Digi96/8's manual. But thanks anyway,
it seems that if I aim for very low latency my jack driver give's
up :( Right now I'm working with 23ms latency witch is ok as long as I
monitor inputs which should be recorded externally. I only have a
computer with an AthlonXP 1800 cpu, maybe I should consider an
upgrade ? :)
/Sv-e
tir, 18 09 2007 kl. 17:54 -0700, skrev Martin Lynch:
</pre>
<blockquote id="StationeryCiteGenerated_1" type="cite">
<pre wrap="">
</pre>
<blockquote id="StationeryCiteGenerated_2" type="cite">
<pre wrap="">Subject: [Ardour-Users] Howto firgure settings out
To: Ardour Users <a class="moz-txt-link-rfc2396E" href="mailto:ardour-users@lists.ardour.org"><ardour-users@lists.ardour.org></a>
Message-ID: <1190120050.5789.7.camel@STUDIO>
Content-Type: text/plain
Hey
I've just put in a REM Digi96/8 in my computer and attached it to a
Behringer ADA8000 interface. I can se all the ADAT ports so it seems all
okay so far. But I wonder how I can calculate the best setup for my card
so that it uses a minimum of processor time. I've managed to setup my
jack with these settings:
JACK compiled with System V SHM support.
loading driver ..
apparent rate = 44100
creating alsa driver ... hw:0,1|hw:0,1|256|4|44100|0|0|nomon|swmeter|-|
32bit
Is there a simple formular to use to calculate settings such as
Frames/Period SampleRate Periods/Buffer.
Thanks in advantage
/Sv-e
</pre>
</blockquote>
<pre wrap="">If what you mean is how to get the lowest latency, I believe the
formula is:
(frames per period X periods per buffer) / sample rate X 1000 =
latency in ms
Note Ardour often shows a different latency than JACK - not sure yet
why - initially I thought perhaps it was showing one way rather than
round trip latency, however my JACK latency shows 2.67ms while Ardour
shows 0.7ms...I choose to believe Ardour ; - )
Here's a simple calculator in OpenOffice attached...
_______________________________________________
Ardour-Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:ardour-users@lists.ardour.org">ardour-users@lists.ardour.org</a>
<a class="moz-txt-link-freetext" href="http://lists.ardour.org/listinfo.cgi/ardour-users-ardour.org">http://lists.ardour.org/listinfo.cgi/ardour-users-ardour.org</a>
</pre>
</blockquote>
<pre wrap=""><!---->
_______________________________________________
Ardour-Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:ardour-users@lists.ardour.org">ardour-users@lists.ardour.org</a>
<a class="moz-txt-link-freetext" href="http://lists.ardour.org/listinfo.cgi/ardour-users-ardour.org">http://lists.ardour.org/listinfo.cgi/ardour-users-ardour.org</a>
</pre>
</blockquote>
</body>
</html>