Re: [LAU] Finding the delay/latency of a Zoom

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From: Ken Restivo <ken@...>

To: Paul Davis <paul@...>

Cc: <linux-audio-user@...>

Subject: Re: [LAU] Finding the delay/latency of a Zoom

Date: Thursday, March 18, 2010 - 9:19 pm

On Thu, Mar 18, 2010 at 03:59:04PM -0400, Paul Davis wrote:

quoted text

> On Thu, Mar 18, 2010 at 3:25 PM, Ken Restivo wrote:
>
> > That seems it'll be the easiest solution so far. Create a 1-sample impulse and stick it on an Ardour track. Wire the L output channel of the Zoom to the R input channel. Arm a track to record from the Zoom, then play the impulse. Then I just have to measure the distance between them in Ardour using the sample display mode.
>
> easier: create a port insert for a track. bring up the port insert's
> GUI. connect to the Zoom. click "measure latency". done. same code as
> jdelay, packaged.

Thanks. I did it the long way, and the magic answer is...

8267 samples of latency at 44.1Khz on the Zoom.

Ardour's timecode display shows 8267 samples as 5 seconds. But at 44100 samples per second, shouldn't 5 seconds be 220500 samples? Likewise, wouldn't 8267 samples be more like 0.188 seconds of delay?

-ken
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Messages in current thread:

[LAU] Finding the delay/latency of a Zoom, Ken Restivo, (Tue Mar 16, 9:33 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Stephen Stubbs, (Wed Mar 17, 12:38 am)

Re: [LAU] Finding the delay/latency of a Zoom, , (Tue Mar 16, 10:29 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Ken Restivo, (Wed Mar 17, 5:44 am)

Re: [LAU] Finding the delay/latency of a Zoom, Jörn Nettingsmeier, (Thu Mar 18, 9:03 am)

Re: [LAU] Finding the delay/latency of a Zoom, Paul Davis, (Thu Mar 18, 4:13 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Ken Restivo, (Thu Mar 18, 7:27 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Paul Davis, (Thu Mar 18, 7:59 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Ken Restivo, (Thu Mar 18, 9:19 pm)

Re: [LAU] Finding the delay/latency of a Zoom, , (Thu Mar 18, 10:17 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Ken Restivo, (Thu Mar 18, 11:52 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Paul Davis, (Fri Mar 19, 1:37 am)

Re: [LAU] Finding the delay/latency of a Zoom, Kevin Cosgrove, (Thu Mar 18, 9:29 pm)

Re: [LAU] Finding the delay/latency of a Zoom, , (Thu Mar 18, 8:32 pm)

Re: [LAU] Finding the delay/latency of a Zoom, Ray Rashif, (Wed Mar 17, 8:57 am)

Re: [LAU] Finding the delay/latency of a Zoom, Gordon JC Pearce, (Tue Mar 16, 9:47 pm)

Re: [LAU] Finding the delay/latency of a Zoom, , (Tue Mar 16, 10:12 pm)