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2. 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 ().

3. 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 ...

4. 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 ...

5. 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.

6. 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

7. Audio coding format - Wikipedia

   en.wikipedia.org/wiki/Audio_coding_format

   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.

8. Advanced Audio Coding - Wikipedia

   en.wikipedia.org/wiki/Advanced_Audio_Coding

   Advanced Audio Coding is designed to be the successor of the MPEG-1 Audio Layer 3, known as MP3 format, which was specified by ISO/IEC in 11172-3 (MPEG-1 Audio) and 13818-3 (MPEG-2 Audio). Improvements include: more sample rates (from 8 to 96 kHz) than MP3 (16 to 48 kHz);

9. 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.