What is the internal bit rate of Vegas?

cchoy wrote on 1/19/2007, 1:17 PM
Someone told me that they didn't trust the transfer of wave data from my Vegas system to their Sonic Solutions system because there was a lousy internal bit rate in Vegas, while Sonic Solutions has an internal bit rate of 54. Does anyone know the bitrate of Vegas, Pro-Tools, and Sonic? Would this be an issue?


Chienworks wrote on 1/19/2007, 3:28 PM
Maybe that someone knows something i don't know, but i strongly suspect they didn't know what they were talking about. I can't think of anything that "internal bit rate" might be referring to, other than he misspoke himself and was trying to say "sample rate." I'm very sure there is no such thing as internal bit rate though.

If that's the case, then Vegas can use just about any sample rate you choose, all the way up to 192Khz. If Sonic Solutions uses 54KHz then you can have Vegas render to this sample rate. That's a very strange number though. Usually the common values are 44.1, 48, 88.2, and 96.

If 54 is really a bit rate, then i'll at least give Sonic Solutions the benefit of the doubt that it's 54K, not 54. And if so, that is a lousy bitrate! That would sound somewhere between bad FM and good AM.
ibliss wrote on 1/19/2007, 4:24 PM
I expect they meant 64 and not 54.

Wouldn't worry about it though.
Chienworks wrote on 1/19/2007, 6:25 PM
Ooooh, perhaps bit depth? Vegas uses 32 point floating numeric representation.
kimgr wrote on 1/20/2007, 4:23 AM
Sonic & PT HD = 48bit fixed
Creamware SFP = 32bit fixed
Paris & PT Mix = 24bit fixed
Sonar = 64 or 32bit float
Vegas, Cubase, Logic, Samplitude etc. = 32bit float
farss wrote on 1/20/2007, 1:25 PM
Probably what matter more is the quality of the summing algorithms.
Protools lead the bunch in double blind tests but I think we're talking 14th coat of wax stuff.
Geoff_Wood wrote on 1/23/2007, 3:24 PM
Should add that a bigger number does not necessarily mean in itself 'better'.

FWIW I have a mixer that has a DSP-FX module that is '46 bits'....

pwppch wrote on 1/23/2007, 5:59 PM
Vegas (and ACID) work internally at normalized 32 bit floating point.

This is pretty much "industry standard", though Sonar (and I believe Samplitude) provide a normalized 64 bit floating point engine. (Not to be confused with at 64 bit compiled application that runs on a 64 bit OS like WinXP64 or Vista64.)

It is far from "lousy ", but that is subjective.

Some DAWs used fix point, prefering to do their accumulation (head room in digital speak) manually.

However, if you render, the bit depth of the rendering format will determine the end result.