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Introducing Daala part 3: Time/Frequency Resolution Switching
I've just posted part 3 in my demo series introducing the Daala video codec. This one is kind of a long one, mainly because I think it's one of the only really detailed presentations of 'TF' aka Time/Frequency resolution switching.
Not to mention, there's hot glue and saltines.
- rdtsc 13y agoAnother impressive piece by Monty. I really enjoy his articles. Just the right mix of text, graphics and formulas. He also made a few videos: https://www.xiph.org/video/ https://www.xiph.org/video/ And the audiphile's "favorite" topic: "24/192 Music Downloads ...and why they make no sense" http://people.xiph.org/~xiphmont/demo/neil-young.html http://people.xiph.org/~xiphmont/demo/neil-young.html
- ZeroGravitas 13y agoInteresting bit of context from his blog post that introduces this document: "Even better... while I was documenting TF for posterity, I spotted a possible improvement. So, I've tossed in documentation of a brand new technique as well!" and "I literally discovered the second stage while writing the demo page about the 'regular' TF we used in Opus. Working two-stage TF is about six days old." http://xiphmont.livejournal.com/60856.html http://xiphmont.livejournal.com/60856.html