Access Virus TI reduced aliasing?

[Juho L]

Originally Posted by unease4u

Well, I'd love to be proven wrong but running the audio engine at 192kHz would take 4 times the processing power compared to 48kHz.

Indeed it does, but I don't see a reason why they would use 192kHz DAC's if the original data is 96kHz.

The DSP's on the TI are way more powerful than on prrevious Viruses and there's two of them so raw CPU power shouldn't be an issue.

[Gopal]

I think you'll find that 192 requires exponentially greater power than 44.1 rather than just 4 times. as 24 bit is exponentially greater than 16 bit. [/quote]

[Juho L]

Originally Posted by Gopal

I think you'll find that 192 requires exponentially greater power than 44.1 rather than just 4 times. as 24 bit is exponentially greater than 16 bit.

Increasing sampling frequency only means that the calculations have to be done faster. The "sampling frequency/processing power needed" relation is linear, which means that 192kHz requires twice as fast processing than 96kHz.

The bitdepth is different issue. On bitdepth the main issues are the memory and bus structure of the processor. For example 16-bit system needs to do extra cycles in addition to increased memory consumption when moving to 24-bit system because it can't handle the data at once (has to be processed in two or several parts: The least significant 16-bit part and the remaining 8-bit most significant part. When doing calculations this way the processing can get really "non-economic" and we have a bottleneck.

But all this technical speculation is quite trivial on this whole issue.

[grs]

I'd like to know if you can run the virus TI drivers (asio?) at any given rate ie 44.1, 48, 96khz etc.
Given that assumtion, would the virus still keep making all its calculations for its synth sounds at 192khz if you had set you sequencer at 44.1khz?
Also if the answer is yes, what happens when it sends to the vsti/usb busses. Downsampling?
That would be what I think would happen. It would sound worse if the virus produced sounds at 44.1khz IMO.
Basically all that Intergration needs way more explanation than the pretty brocures!
I'll be happy if there is a manual floating around for the TI, anyone seen it?

[blay]

no manual - prob just what youve seen already.
theres some pretty 3d animations on their site now
guess youll have to sit tight with the rest of us until access gives us some more specs to drool over

[grs]

can you give me the link, I havn't seen them there?

[blay]

www.access-music.de/3d/virus_ti_keyboard.html

the check the relevant items page and look in the column menu