From email at holger-strauss.de Tue Aug 3 09:09:00 2021 From: email at holger-strauss.de (Holger Strauss) Date: Tue, 3 Aug 2021 11:09:00 +0200 Subject: [opus] .opus test set Message-ID: <000501d78847$33c9aeb0$9b5d0c10$@holger-strauss.de> Hi, on page https://www.opus-codec.org/docs/, in the Test Vectors section at the bottom, there is a link to "The .opus test set", referring to https://people.xiph.org/~greg/opus_testvectors/. Unfortunately, this test set is not available any more. Some of these files are still available using the wayback machine: https://web.archive.org/web/20191223064407/https://people.xiph.org/~greg/opu s_testvectors/ However, all files in the failure_cases und the opus_multichannel_examples folders seem to be gone. Can these be accessed somewhere else? Are there alternatives? Thanks in advance. Holger -------------- next part -------------- An HTML attachment was scrubbed... URL: From flatmax at flatmax.com Tue Aug 3 11:16:42 2021 From: flatmax at flatmax.com (Matt Flax) Date: Tue, 3 Aug 2021 21:16:42 +1000 Subject: [opus] vector quantisation Message-ID: Hi there, I was reading about pyramid vector quantisation and it was mentioned that Opus uses this type of encoding. I understand that Opus has many different steps in the encoding process, it is rather formidable ! Are the encoding methods used in Opus based on polar or spherical components ? Does opus encode polar movements ? thanks Matt