For making MP3 I've got iTunes and ProTools 7.0. In iTunes the options include the bit rate, sample rate, and VBR encoding (I'm guessing that is vs CBR compression). In ProTools the MP3 file is made by bouncing to disk, which is done in real-time. It gives me the options of bit rate, sample rate and 2 types of encoding speed: "fastest" and "highest quality".
The iTunes is much faster because it's not done in real-time, so I'd rather use it. So the question is does anyone know if there would be any difference in quality from using ProTools or iTunes to make MP3 files if I chose the exact bit rate and sample rates?
Does everyone suggest using 44100Hz for sample rate? What would 22050Hz be appropriate for?
As for which encoding, I don't know the difference in VBR or CBR; but am more interested in knowing the difference in quality between ProTools "fastest" and "highest quality". Can it be heard? And if so when would it make a difference to use one or the other. Thanks for your advise from those of you with experience.
I have to say that the best sounding MP3s I make are with Sound Forge. By a longshot. With a minimal amount of artifacts produced, it makes mp3s rendered instantly (and with batch processing) that make me not worried to share my music first by mp3.