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True Audio (TTA) Lossless: 0–4 GiHz 8, 16, 24 approx. 1045 ms [66] Yes Yes: Up to 16 (with ffmpeg), but no channel allocation WavPack Lossless: Lossless, Hybrid 1 Hz to 1 GiHz Up to 32 (and 32-bit float), and 1-bit DSD. ? Yes Yes: Up to 256 channels Windows Media Audio Lossless: Lossless: 8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz 16 ...
ALAC supports up to 8 channels of audio at 16, 20, 24 and 32 bit depth with a maximum sample rate of 384 kHz. ALAC data is frequently stored within an MP4 container with the filename extension.m4a. This extension is also used by Apple for lossy AAC audio data in an MP4 container (same container, different audio encoding).
MPEG-4 SLS, or MPEG-4 Scalable to Lossless as per ISO/IEC 14496-3:2005/Amd 3:2006 (Scalable Lossless Coding), [1] is an extension to the MPEG-4 Part 3 (MPEG-4 Audio) standard to allow lossless audio compression scalable to lossy MPEG-4 General Audio coding methods (e.g., variations of AAC).
The True Audio, real-time lossless audio codec. .voc: Creative Technology: The file format consists of a 26-byte header and a series of subsequent data blocks containing the audio information .vox: The vox format most commonly uses the Dialogic ADPCM (Adaptive Differential Pulse Code Modulation) codec. Similar to other ADPCM formats, it ...
MPEG-4 Audio Lossless Coding, also known as MPEG-4 ALS, is an extension to the MPEG-4 Part 3 audio standard to allow lossless audio compression. The extension was finalized in December 2005 and published as ISO / IEC 14496-3:2005/Amd 2:2006 in 2006. [ 1 ]
Lossless Audio (LA) [5] – No update for 10+ years; Shorten (SHN) [6] – Officially discontinued. libshn; FFmpeg (decoding only) Lossless Predictive Audio Compression (LPAC) – Predecessor of MPEG-4 ALS; Lossless Transform Audio Compression (LTAC) – Predecessor of LPAC; MPEG-1 Audio Layer III HD – Officially discontinued
A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.
The MPEG-4 Part 3 consists of a variety of audio coding technologies – from lossy speech coding (HVXC, CELP), general audio coding (AAC, TwinVQ, BSAC), lossless audio compression (MPEG-4 SLS, Audio Lossless Coding, MPEG-4 DST), a Text-To-Speech Interface (TTSI), Structured Audio (using SAOL, SASL, MIDI) and many additional audio synthesis and ...