Delay compensation with hardware inserts

[d.f.]

I have PT8 HD3 on a Dual 2.3GHz Power PC G5.

Using Apogee AD-16x, 2xDA-16x and a Rosetta 800. (AD-16x and DA-16x in advanced routing with XHD cards).

I have entered the delay compensation times (given in the XHD card manual - page 9) into the appropriate fields in the IO window of PT (H/W insert delay).

When now I try and parallel compress, say, a drum kit, by sending the individual drums to an aux (via send a) across which an outboard compressor/limiter is hardware inserted it still "phases" with the direct out signal of the drums.

It is driving me mad as this is so easy to do on an analogue console.

What am I doing wrong here?

In the playback engine window what do I have to set the delay compensation engine to? None, short or long?

Anything else?

Many thanks in advance.. David.

[crizdee]

Originally Posted by d.f.

I have PT8 HD3 on a Dual 2.3GHz Power PC G5.

Using Apogee AD-16x, 2xDA-16x and a Rosetta 800. (AD-16x and DA-16x in advanced routing with XHD cards).

I have entered the delay compensation times (given in the XHD card manual - page 9) into the appropriate fields in the IO window of PT (H/W insert delay).

When now I try and parallel compress, say, a drum kit, by sending the individual drums to an aux (via send a) across which an outboard compressor/limiter is hardware inserted it still "phases" with the direct out signal of the drums.

It is driving me mad as this is so easy to do on an analogue console.

What am I doing wrong here?

In the playback engine window what do I have to set the delay compensation engine to? None, short or long?

Anything else?

Many thanks in advance.. David.

Hi,

You have to use the software inserts to be able to use delay compensation for your hardware! not inputs and outputs!!

In the i/o setup page under inserts create your i/o's for the hardware items then access them from the plugins menu / i/o

Chris

[d.f.]

I am using the software inserts!

[crizdee]

Originally Posted by d.f.

I am using the software inserts!

Hopefully our phone conversation got you sorted let us know how you get on!

Criz

[d.f.]

Yes.. thanks eversomuch Criz.

Still encountering some problems... tickling the delay compensation times within the IO page, but the parallel compressed signal never completely disappears with flip phase as it does when not using hardware insert... hmmm

[d.f.]

Think I may have it!!!

Many thanks..

[yeloocevad]

What did you find out?

[d.f.]

...that I was doing it wrong.

1. In IO page, under H/W inserts tab, enter the delay compensation time that is in the Apogee XHD card manual in all 16 fields. This was 0.34 ms for AD-16x and DA-16x in advanced routing mode.

2. Turn the delay compensation engine on to long.

It worked.

[Keybeeetsss]

U need MellowMuse-U need MellowMuse!!!!

j/k

[Chris Lambrechts]

my 2 cents.

delay compensation on hardware inserts works flawlessly in PT. Use it every day with no issues whatsoever. Most analog outboard doesn't add enough of a relevant amount of processing time to make it an issue ... hence why it worked on analog desks without delay compensation and hence why it works on PT hardware inserts with delay compensation.

Important here is to understand what delay compensation in the case of Hardware inserts does. It compensates for the DA conversion time bringing the signal OUT of PT and the AD conversion tim bringing it back IN to PT.

The outboard processing time is irrelevant (in most cases)

Now I'm pretty sure I know what your problem is : the Apogees.

The DA / DA times for the apogees are NOT the same as the 192's. Open up your I/O setup ... what do you see ? 192's right ?

There you go ... PT sees your interfaces as 192's, basically because apogee developed cards that tricks PT into believing there's a 192 attached.

Works fine ... except in these type of scenarios where PT compensates for the 192 DA/AD path which is different from the apogees. So you have to add the extra delays manually in the I/O setup like you indicated in your last post.

Don't have the numbers at hand and too lazy to go look them up but the difference is big enough to make things go out of phase ... definitely.


Well ... 1 sample is enough to make things out of phase really ....



Chris