GSIF drivers' problem

rodos1979 · Post by **rodos1979** » Fri Jun 18, 2004 11:05 am

Hello to all!

Have you ever noticed that the GSIF's driver's latency follows (with exaggeration) the ULLI settings?

I am working on a piece with SX (audio and VSTi) and Gigastudio and I have come to the mixing point. I want to lower the ULLI setting to 23ms, so that I can apply more effects etc (the current setting is 4ms).

When I lower the ULLI, everything in Giga sounds extremely delayed (for an ULLI setting of 23ms, the delay is easily noticable, like 50-60ms!)

I think that CWA should rebuild the GSIF drivers to make them not to follow the ULLI setting.

Or even better to build GSIF2 drivers, so that we can have Gigastudio and SX working together with sample accuracy (like the VSTi).

Thanks

Shayne White · Post by **Shayne White** » Fri Jun 18, 2004 12:53 pm

This is exactly why I don't use Giga (among other reasons)!

Try Kontakt or Halion and import all your Giga files, or run at 11.6ms, which I think is fast enough that you won't hear much of a delay, and yet your CPU utillization will be low.

You can also try upgrading to the latest GigaStudio and run it in ReWire mode, which enables it to run on ASIO.

Shayne

rodos1979 · Post by **rodos1979** » Fri Jun 18, 2004 5:09 pm

I did some further tests to determine the delay of GSIF modules in relation to the ULLI setting.
I created a .gig with only one sound with extremely sharp attack, so that it is easy to tell the exact start of the note. I created a part with 8 simple hits in SX and recorded back in it the output of Giga.
The results:

@ 3ms: 3,4,5,5,5,6,5,6, average: 4.875ms
@ 4ms: 6,7,5,7,7,23(!),8,7, average: 8.75ms
@ 7ms: 14,14,13,12,11,10,10,9, average: 11.625ms
@ 13ms: 18,19,17,17,16,15,26,25, average: 19.125ms
@ 25ms: 42,31,30,40,28,39,26,37, average: 34.125ms

Draw your own conclusions!

No wonder why all my drums parts were sounding completely sloppy!!

With Gigastudio 2, will I be able to sync with sample accuracy? In order to achieve this, should we have GSIF2 drivers? Or it doesnt matter?

Are Kontakt and Halion sample-accurate (like the rest VSTi)?

An ex-fanatic of Giga...

astroman · Post by **astroman** » Fri Jun 18, 2004 5:47 pm

I dunno the driver specs of gsif(1), but it obviously lacks an exact timing measure as ASIO 2 has built in. The driver specs might be too loose (not supplying the necessary sync) according to the time shift in your tests.
Under this perspective it wouldn't matter if one had to add a constant like '+ half ulli value', but on the other hand people apply extra tools to get a 'human touch'

Btw Giga isn't exactly targeted at machine like beats ...

cheers, Tom

Shayne White · Post by **Shayne White** » Fri Jun 18, 2004 7:32 pm

I don't think GSIF 2 adds anything except audio input into GS. Not too useful. But GS2 adds ReWire support so you can route the audio channels through a sequencer (Cubase, Sonar, etc.) and use ASIO. That would probably give you better results.

Shayne