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WavPack 5.8.x is released

2025-01-29 00:08:12 by tuxman | Views: 8942 | Comments: 21

WavPack 5.8.1 was released yesterday, containing various optimizations.

Changes:

Quote
added: if present, use multiple cores by default (cli programs only)
added: option --no-threads to force single-threading (cli programs)
fixed: noise issue in hybrid mode (low bitrate / high sample rate)
improved: all new DNS algorithm for better hybrid mode quality
improved: "extra" option with multithreading and hybrid modes
added: TSOC (Composer Sort) added to handled ID3v2 tags
added: --no-overwrite command-line option to wvunpack
fixed: handling of 24+ channels (CoolEdit / Audition)
fixed: encoding raw audio from pipes (Windows only)
fixed: handling of unpacked samples in WAV files
fixed: rare command-line option parsing issue

New 3D audio format Eclipsa Audio

2025-01-04 00:19:27 by spoon | Views: 10990 | Comments: 0

Has Samsung and Google behind it, will be open source.

Samsung and Google are ready to push a new standard, Eclipsa Audio. This format will enable 3D audio experiences on certain YouTube videos later this year, with support available across Samsung’s 2025 lineup of TVs and soundbars. Over the years, Samsung notably hasn’t supported Dolby Vision HDR for dynamic HDR metadata, choosing instead to promote its preferred alternative, HDR10 Plus. Now, it seems ready to make a similar competitive push for open-source 3D audio support.

Eclipsa Audio could eventually serve as a free alternative to Dolby Atmos, the dominant 3D audio format that hardware makers like Samsung pay to license for TVs and other equipment. Samsung says that similar to Atmos, this audio format supports adjusting “audio data such as the location and intensity of sounds, along with spatial reflections” to create a 3D experience.

https://www.theverge.com/2025/1/3/24335170/samsung-google-eclipsa-spatial-audio-format-2025-tvs

FLAC is now formally specified in RFC 9639

2024-12-19 05:38:38 by ktf | Views: 10911 | Comments: 3

RFC9639 has been published, specifying the Free Lossless Audio Codec (FLAC) format.

Although FLAC has had a specification document since 2000 and a open-source reference implementation filling in the details, this document should formally specify the format, such that implementers don't have to look at the reference source code or browse the mailing list archives for details.

This publication doesn't change the FLAC format except explicitly adding support for 32-bit audio and adding restrictions to accommodate, see here for details.

The main benefit this publications brings is that it should make writing a new FLAC decoder implementation from scratch much easier. It also provides assurance for archives wanting to use the FLAC format that their files remain decodable in the far future, in case FLAC ever becomes obsolete and its implementations unusable.

I'd like to thank all the users of this board that participated in making this document better.