Any idea how to calculate the Hardware delay compensation on PT inserts

andre tchmil · 18th October 2006

Not much info on the Digi manual about this feature.
Is there a proven way how to calculate the needed delay when using hardware at the insert points?

Charlie-O · 18th October 2006

hold down the apple key and click on track were it says vol. (i green), until it says dly.

djui5 · 18th October 2006

Yeah, take a really fast sample, like half a snare hit, and send it out, into the outboard, and back in. Compare that to the original hit, and see how many samples it's late.

andre tchmil · 18th October 2006

Quote:

Originally Posted by Charlie-O

hold down the apple key and click on track were it says vol. (i green), until it says dly.

Yeah, but does that mean that PT automatically compensate for this ?

What about the I/O setup. What to fill in on the "H/W insert delay" ?

**Geert van den Berg** · 18th October 2006

You don't have to calculate the delay compensation if you use HD and use it with the Digidesign converters, when ADC is turned on it will compensate automatically...

You can add samples in the I/O setup to compensate for outboard latency of FX boxes if you'd want to do that or if you use converters of other manufacturers coupled with the Digidesign stuff, then you'd have to do as Djui5 pointed out to get to know the delay.

There's one minor point in the whole insert story, if you'd mult signals you'll still get some phasing issues because the ADC is sample accurate and once your signal is converted to analog and back to digital, the converter only outputs in samples and then there's a minor difference which is a bit smaller than one whole sample, so PT can't compensate for that.

For more details and 2 ways to remedy this problem, it was recently discussed here, look at reply #29 in particular...
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18th October 2006	#1
andre tchmil Lives for gear Joined: Sep 2002 Location: always on the move Posts: 750 Thread Starter	Any idea how to calculate the Hardware delay compensation on PT inserts Not much info on the Digi manual about this feature. Is there a proven way how to calculate the needed delay when using hardware at the insert points?

18th October 2006	#3
djui5 Lives for gear Joined: Mar 2004 Location: Phoenix Posts: 6,664	Yeah, take a really fast sample, like half a snare hit, and send it out, into the outboard, and back in. Compare that to the original hit, and see how many samples it's late. __________________ _________________ "What is a crossfire hurricane & why wasn't I born in one?" Randy Wright

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18th October 2006	#2
Charlie-O Lives for gear Joined: Aug 2004 Location: California Posts: 882	hold down the apple key and click on track were it says vol. (i green), until it says dly. __________________ It is not what you have, but what you create with it....... www.myspace.com/charlieomusic Grassroots

18th October 2006	#5
Geert van den Berg Mac Moderator Joined: May 2003 Location: Amsterdam Posts: 3,454	You don't have to calculate the delay compensation if you use HD and use it with the Digidesign converters, when ADC is turned on it will compensate automatically... You can add samples in the I/O setup to compensate for outboard latency of FX boxes if you'd want to do that or if you use converters of other manufacturers coupled with the Digidesign stuff, then you'd have to do as Djui5 pointed out to get to know the delay. There's one minor point in the whole insert story, if you'd mult signals you'll still get some phasing issues because the ADC is sample accurate and once your signal is converted to analog and back to digital, the converter only outputs in samples and then there's a minor difference which is a bit smaller than one whole sample, so PT can't compensate for that. For more details and 2 ways to remedy this problem, it was recently discussed here, look at reply #29 in particular... Digidesign Icon Issues: The List