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Old 08-04-2007, 02:21 AM
Roey Roey is offline
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Join Date: Mar 2005
Location: London
Posts: 85
Default Re: Bitrate question

Syd,

Both Pro Tools and Sonar use 32-bit float internally. The only difference is that Sonar lets you export files using the 32-bit float format, while Pro Tools only support the 24 bit integer format.

In terms of quality, we can say that 32-bit float has 25 bits (151 dB) of Signal-To-Noise while 24-bit integer has 24 Singal-To-Noise (144 dB). Transferring from Sonar to Pro Tools via 24 bit integer files results in a loss of one bit, the addition of distortion or dither noise. Had Pro Tools supported the 32-bit float file, that bit would be kept and no distortion or dither noise would be added. However, this lost bit, the distortion, and the dither noise are introduced below what we human can perceive. Thus, it is not such a big deal.

It would be nice if future versions of Pro Tools would support 32-bit float files. In that respect it lags behind Sonar, Cubase and Logic, to name a few...

Thanks,
Roey
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