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2. High-Efficiency Advanced Audio Coding - Wikipedia

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

   Die Plattenkiste Albumplayer, Ripper, Converter, and CD Burner that allows you to rip to AAC and aacPlus, convert to AAC and aacPlus and burn AAC and aacPlus to gapless Audio-CD. mp3PRO vs MP3 Archived 2017-02-02 at the Wayback Machine - includes graphs comparing high-frequency performance for MP3pro (similar to HE-AAC+) Official MPEG web site

3. Adaptive Multi-Rate audio codec - Wikipedia

   en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio...

   The Adaptive Multi-Rate (AMR, AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding.AMR is a multi-rate narrowband speech codec that encodes narrowband (200–3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality [3] speech starting at 7.4 kbit/s.

4. 3GP and 3G2 - Wikipedia

   en.wikipedia.org/wiki/3GP_and_3G2

   3GP is defined in the ETSI 3GPP technical specification. [1] 3GP is a required file format for video and associated speech/audio media types and timed text in ETSI 3GPP technical specifications for IP Multimedia Subsystem (IMS), Multimedia Messaging Service (MMS), Multimedia Broadcast/Multicast Service (MBMS) and Transparent end-to-end Packet-switched Streaming Service ().

5. GPAC Project on Advanced Content - Wikipedia

   en.wikipedia.org/wiki/GPAC_Project_on_Advanced...

   In parallel, as MPEG-4 was intended to compete with Macromedia Flash, GPAC evolved to support other standards such as X3D, W3C SVG Tiny 1.2, and OMA/3GPP/ISMA and eventually MPEG-DASH. The MPEG-DASH feature can be used to reconstruct .mp4 files from videos streamed and cached in this format (e.g., YouTube). [8] Various research projects used or ...

6. List of audio conversion software - Wikipedia

   en.wikipedia.org/wiki/List_of_audio_conversion...

   An audio conversion app (also known as an audio converter) transcodes one audio file format into another; for example, from FLAC into MP3. It may allow selection of encoding parameters for each of the output file to optimize its quality and size.

7. Comparison of audio coding formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_audio_coding...

   For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint. First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs ...

8. Comparison of video container formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_video...

   MP3: Lossy: 1991-12 Expired patents [87] Yes Yes MPEG-1 Audio Yes Yes [β] Yes Yes No No AC-3: Lossy: 1991-02 Expired patents Yes Yes [90] Yes Yes Yes Yes Private No No E-AC-3: Lossy: 2005-02 Patent encumbered QuickTime [γ] Yes Yes Yes No No No No No DTS: Lossy: 1993-06 Proprietary: Yes Yes No Yes Yes No Private No No WMA: Lossy: 1999-08 ...

9. Transcoding - Wikipedia

   en.wikipedia.org/wiki/Transcoding

   Transcoding is the direct digital-to-digital conversion of one encoding to another, [1] such as for video data files, audio files (e.g., MP3, WAV), or character encoding (e.g., UTF-8, ISO/IEC 8859).