Dimension Pro at higher sample rates (hmmm...)

Hi all,

Here's what I'm using:

Dimension Pro from within Project 5 (using Elevator Radio and Taboo Style demo songs)

HP DV1000 Laptop
E-Mu 1616 Audio Interface with latest drivers. (Latency set at 50ms)

As an exercise in learning more about my sound card I started experimenting with higher sample rates (88.2Khz and 96KHz). I tested some projects using Sonar (TTS-1 primarily) and Reason which performed flawlessly. When I got around to testing with Project 5 I ran into some interesting phenomena.

At 44.1KHz sample rate everything is fine.

At 88.2Khz Elevator Radio was playing fine until the synth solo using the Exposed Saw patch. The Exposed Saw patch tetered on the edge of sounding fine and being very distorted (like fuzz box distortion), sometimes falling over the edge. At 96Khz the Exposed Saw zippered and caused dropouts at various points during the solo. I tried changing patches for the synth solo and some exhibited similar behavior and some played fine.

I tried Taboo Style at 88.2Khz. During the fast part with the trading 8's synth solos, both of the soloing synth tracks were in and out of distortion.

Interestingly though, all of the non-synth parts showed no distortion in either project

Did I do something wrong? Was I using Dimension Pro outside of its specified range? Or did I stumble onto a bug?

jvanva

Hi René,

I did have to freeze quite a few tracks to play Taboo Style, but only for the beginning of the tune. Once the drums kick in the CPU usage isn't too bad.

FWIW, with Elevator Radio, I soloed the synth solo and still had the distortion at rather low CPU usage with the Exposed Saw.

I didn't try rendering yet, but I will try that next and report the result.


jvanva

I traced it to the pitch bending that occurs during the solo.

I didn't want to offer my $.02 until I saw those magic words. This has come up before; I've experienced it myself. I have no real solutions, but I did post what I had found out through experimentation [here].