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2. Audio Lossless Coding - Wikipedia

   en.wikipedia.org/wiki/Audio_Lossless_Coding

   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 ]

3. List of open-source codecs - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_codecs

   This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats, audio codecs and video codecs respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats.

4. High-Efficiency Advanced Audio Coding - Wikipedia

   en.wikipedia.org/wiki/High-Efficiency_Advanced...

   High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio defined as an MPEG-4 Audio profile in ISO/IEC 14496–3. It is an extension of Low Complexity AAC (AAC-LC) optimized for low- bitrate applications such as streaming audio .

5. Vorbis - Wikipedia

   en.wikipedia.org/wiki/Vorbis

   Vorbis nominal bitrate at quality levels for 44.1 kHz stereo input. The new libvorbis v1.2 usually compresses better than these values (effective bitrate may vary). Quality Nominal bitrate Official Xiph.Org Foundation Vorbis -q-1 45 kbit/s 48 kbit/s -q0 64 kbit/s -q1 80 kbit/s -q2 96 kbit/s -q3 112 kbit/s -q4 128 kbit/s -q5 160 kbit/s -q6

6. Musepack - Wikipedia

   en.wikipedia.org/wiki/Musepack

   In May 2004, a series of double-blind listening tests [5] (as reported on Slashdot [6]) suggested that Musepack and Ogg Vorbis (which was the 1.1 "aoTuV" fork at the time) were the two best available codecs for high-quality audio compression at bitrates around 128 kbit/s, beating MP3, AAC, WMA, and ATRAC. Listening tests of MPC:

7. Comparison of free software for audio - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_free...

   multi-track audio recorder and editor GPL-2.0-or-later: Audacity: Dominic Mazzoni Yes Yes Yes Yes wxWidgets multi-track audio recorder and editor GPL-2.0-or-later, CC BY 3.0 (documentation) Ecasound: Yes Yes Yes Yes limited support through Cygwin: command line audio recorder GPL-2.0-or-later: Gnome Wave Cleaner: Jeff Welty Yes No No GTK+ audio ...

8. List of codecs - Wikipedia

   en.wikipedia.org/wiki/List_of_codecs

   Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.

9. MPEG-4 Part 3 - Wikipedia

   en.wikipedia.org/wiki/MPEG-4_Part_3

   MPEG-4 Audio is a new type of audio standard that integrates numerous different types of audio coding: natural sound and synthetic sound, low bitrate delivery and high-quality delivery, speech and music, complex soundtracks and simple ones, traditional content and interactive content. [7]