On Mar 23, 2016, at 2:57 PM, James McCartney <[email protected]> wrote: > On Mar 7, 2016, at 11:57 AM, Paul Davis <[email protected]> wrote: >> The app I'm working on is an audio editor. It supports 32 or 64 bit files >> natively. >> >> What format supports 64 bit sample depth? What program creates them? > > CAF supports double precision. I just tested that both Audacity and Sound > Studio will open double precision CAF files.
I believe that a more important question is: Which form of 64-bit support is actually useful? 64-bit sample depth, or 64-bit recording length? There are plenty of real-world examples where 32-bit AIFF and WAV recording lengths are insufficient. Many recording tools (hardware and software) must automatically close an AIFF/WAV and start a new one periodically in order to make a complete recording without running out of time. Mastering those recordings requires extra steps to put the pieces back together seamlessly. Formats like CAF and RIFF64 solve this limitation by allowing longer recordings. I'm not aware of any real-world problem that is solved by 64-bit sample depth storage in files. Granted, audio plugins commonly use 64-bit processing internally, but they do not require 64-bit execution, nor do they require 64-bit storage. Brian Willoughby Sound Consulting _______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com This email sent to [email protected]
