[linux-audio-user] Re: Sample Rates / Sample Sizes

Mark Knecht mknecht at controlnet.com
Thu Jun 24 18:22:37 EDT 2004


Steve Harris wrote:
> On Thu, Jun 24, 2004 at 11:05:09 -0700, Mark Knecht wrote:
> 
>>4) If I insert a dither in the middle of a session on a single track 
>>then it's unlikely that the output is converted to int unless Pro 
>>Tools/RTAS is design to convert it right back to float so that the track 
>>can mix with the rest of the session. I don't have a clue what really 
>>happens in this case. I've never had a reason to use this, but it does 
>>raise the question of how to best import a 24-bit track into a 16-bit 
>>session. I've have to do this once or twice. Possibly I should have 
>>dithered the track. I'd guess the normal conversions just strip the 
>>bottom 8-bits?
> 
> 
> Protools /should/ fall back to some default dither if you do this.
> Actually it would be easy to test. Import 24bit, very low signal, export
> from 16 bit session, see if theres noise in the bottom bits.
> 
> - Steve
> 

very low signal == only the bottom 8 of 24 bits have data, while the 
upper 16 are all zeros? Interesting idea if I understand you correctly.



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