Gale Andrews wrote:cyrano wrote:I'm still not sure what you mean exactly.
If you have Song_A.mp3 44100 Hz stereo 192 kbps MP3 and Song_B.wav 96000 Hz stereo 24-bit WAV in one track, what would you show in the Track Info above the Mute button? Suppose you imported those files into separate tracks, then Mixed and Rendered them to one track? What does the Track Info for the "Mix" track show?
Forgive me for being dense. Now I get it. That's a bit of a gotcha. But why would you put these on the same track? For me, one import = one track. I wouldn't even think about putting more than one item on a track, even if they had the same resolution. In fact, I think you can't do that in most daw's without automatic resampling or trouble (like running at the wrong speed).
Gale Andrews wrote:cyrano wrote:If internal processing is 32 bit, all edits, as in cut and paste from one track to another are 32 bits, regardless of the source.
"Internal processing" means changing the sample values. Cut and paste does not change the sample values so does not change the sample format or require dither.
I've been following that other thread* and noticed I didn't really understand Audacity's guts. IIUC, it isn't always treated and stored in 32 bit float. If the source is 24/48, the project will also be stored as 24/48, but once you start editing, it's 32 bit float. And when converting back after editing, dithering is applied.
So, if I record at 24/48 and immediately after recording export as a wav, there should be no dithering as this is unedited and the format supplied by the ADC?
But if I even just clip away a second, It's dithered?
I have to admit I never
store audio in Audacity's project files. I always export a wav at the same resolution as the source. And I start with a wav as archive copy after recording, before editing.
* EDIT: This thread:
http://forum.audacityteam.org/viewtopic ... 20&t=85558