Sampo Syreeni wrote:

On 2017-01-10, Stefan Schreiber wrote:

I came basically to the same conclusions. (AAC implementation possible, some MP3 "hack" maybe...) But to implement this, you or I or anybody would need the (detailled) format specifications.


It'd take a fair amount of digging, but I think I have all of that stashed away somewhere, for at least the MPEG2 layers and Transport Streams, MPEG4, RIFF, DTS, AC3 and Core Audio. Not exactly sure about the newer coding tools like Parametric Stereo, though. (Of all the things, I collect data format specs.)

Parametric (stereo + surround) compression tools should not be used to encode Ambisonics in its "native" and UHJ >= 3 ch. forms. Agreed! (2-channel UHJ is probably the exception. Anywhere else, an Ambisonics channel can't be treated in the same way as some stereophonic channel. )

Best,

Stefan


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