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53 relations: AAC-LD, Adaptive Transform Acoustic Coding, Advanced Audio Coding, Audio codec, Audio Lossless Coding, Code-excited linear prediction, Delivery Multimedia Integration Framework, Digital multimedia broadcasting, Digital rights management, DLS format, Elementary stream, Fault tolerance, General MIDI, Harmonic and Individual Lines and Noise, Harmonic Vector Excitation Coding, High-Efficiency Advanced Audio Coding, International Electrotechnical Commission, International Organization for Standardization, ISO base media file format, ISO/IEC JTC 1/SC 29, Long-term prediction (communications), Lossless compression, Lossy compression, MIDI, Modified discrete cosine transform, Moving Picture Experts Group, MP3, MPEG Surround, MPEG transport stream, MPEG-1, MPEG-1 Audio Layer I, MPEG-1 Audio Layer II, MPEG-2, MPEG-4, MPEG-4 Part 14, MPEG-4 Part 2, MPEG-4 SLS, MPEG-4 Structured Audio, MPEG-D, Parametric Stereo, Patent pool, Polyphase quadrature filter, Real-time Transport Protocol, Sample-based synthesis, Sound quality, SoundFont, Spectral band replication, Speech coding, Speech synthesis, Structured Audio Orchestra Language, ..., TwinVQ, Unified Speech and Audio Coding, Wavetable synthesis. Expand index (3 more) »
AAC-LD
The MPEG-4 Low Delay Audio Coder (a.k.a. AAC Low Delay, or AAC-LD) is audio compression standard designed to combine the advantages of perceptual audio coding with the low delay necessary for two-way communication.
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Adaptive Transform Acoustic Coding
Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.
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Advanced Audio Coding
Advanced Audio Coding (AAC) is a proprietary audio coding standard for lossy digital audio compression.
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Audio codec
An audio codec is a codec (a device or computer program capable of encoding or decoding a digital data stream) that encodes or decodes audio.
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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.
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Code-excited linear prediction
Code-excited linear prediction (CELP) is a speech coding algorithm originally proposed by M. R. Schroeder and B. S. Atal in 1985.
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Delivery Multimedia Integration Framework
DMIF, or Delivery Multimedia Integration Framework, is a uniform interface between the application and the transport, that allows the MPEG-4 application developer to stop worrying about that transport.
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Digital multimedia broadcasting
Digital multimedia broadcasting (DMB) is a digital radio transmission technology developed in South Korea as part of the national IT project for sending multimedia such as TV, radio and datacasting to mobile devices such as mobile phones, laptops and GPS navigation systems.
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Digital rights management
Digital rights management (DRM) is a set of access control technologies for restricting the use of proprietary hardware and copyrighted works.
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DLS format
DLS (from Downloadable Sounds) are standardized file formats for digital musical instrument sound banks (collections of virtual musical instrument programs).
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Elementary stream
An elementary stream (ES) as defined by the MPEG communication protocol is usually the output of an audio or video encoder.
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Fault tolerance
Fault tolerance is the property that enables a system to continue operating properly in the event of the failure (or one or more faults within) some of its components.
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General MIDI
General MIDI or GM is a standardized specification for electronic musical instruments that respond to MIDI messages.
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Harmonic and Individual Lines and Noise
Harmonic and Individual Lines and Noise (HILN) is a parametric codec for audio.
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Harmonic Vector Excitation Coding
Harmonic Vector Excitation Coding, abbreviated as HVXC is a speech coding algorithm specified in MPEG-4 Part 3 (MPEG-4 Audio) standard for very low bit rate speech coding.
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High-Efficiency Advanced Audio Coding
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.
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International Electrotechnical Commission
The International Electrotechnical Commission (IEC; in French: Commission électrotechnique internationale) is an international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".
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International Organization for Standardization
The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.
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ISO base media file format
ISO base media file format (ISO/IEC 14496-12 – MPEG-4 Part 12) defines a general structure for time-based multimedia files such as video and audio.
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ISO/IEC JTC 1/SC 29
ISO/IEC JTC 1/SC 29 Coding of audio, picture, multimedia and hypermedia information is a standardization subcommittee of the Joint Technical Committee ISO/IEC JTC 1 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), that develops and facilitates international standards, technical reports, and technical specifications within the field of audio, picture, multimedia, and hypermedia information coding.
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Long-term prediction (communications)
In GSM, a Regular Pulse Excitation-Long Term Prediction (RPE-LTP) scheme is employed in order to reduce the amount of data sent between the mobile station (MS) and base transceiver station (BTS).
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Lossless compression
Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data.
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Lossy compression
In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.
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MIDI
MIDI (short for Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related music and audio devices.
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Modified discrete cosine transform
The modified discrete cosine transform (MDCT) is a lapped transform based on the type-IV discrete cosine transform (DCT-IV), with the additional property of being lapped: it is designed to be performed on consecutive blocks of a larger dataset, where subsequent blocks are overlapped so that the last half of one block coincides with the first half of the next block.
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Moving Picture Experts Group
The Moving Picture Experts Group (MPEG) is a working group of authorities that was formed by ISO and IEC to set standards for audio and video compression and transmission.
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MP3
MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format for digital audio.
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MPEG Surround
MPEG Surround (ISO/IEC 23003-1 or MPEG-D Part 1), also known as Spatial Audio Coding (SAC) is a lossy compression format for surround sound that provides a method for extending mono or stereo audio services to multi-channel audio in a backwards compatible fashion.
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MPEG transport stream
MPEG transport stream (transport stream, MPEG-TS, MTS or TS) is a standard digital container format for transmission and storage of audio, video, and Program and System Information Protocol (PSIP) data.
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MPEG-1
MPEG-1 is a standard for lossy compression of video and audio.
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MPEG-1 Audio Layer I
MPEG-1 Audio Layer I, commonly abbreviated to MP1, is one of three audio formats included in the MPEG-1 standard.
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MPEG-1 Audio Layer II
MPEG-1 Audio Layer II or MPEG-2 Audio Layer II (MP2, sometimes incorrectly called Musicam or MUSICAM) is a lossy audio compression format defined by ISO/IEC 11172-3 alongside MPEG-1 Audio Layer I and MPEG-1 Audio Layer III (MP3).
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MPEG-2
MPEG-2 (a.k.a. H.222/H.262 as defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information".
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MPEG-4
MPEG-4 is a method of defining compression of audio and visual (AV) digital data.
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MPEG-4 Part 14
MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images.
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MPEG-4 Part 2
MPEG-4 Part 2, MPEG-4 Visual (formally ISO/IEC 14496-2) is a video compression format developed by MPEG.
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MPEG-4 SLS
MPEG-4 SLS, or MPEG-4 Scalable to Lossless as per ISO/IEC 14496-3:2005/Amd 3:2006 (Scalable Lossless Coding), 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).
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MPEG-4 Structured Audio
MPEG-4 Structured Audio is an ISO/IEC standard for describing sound.
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MPEG-D
MPEG-D is a group of standards for audio coding formally known as ISO/IEC 23003 - MPEG audio technologies, published since 2007.
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Parametric Stereo
Parametric Stereo (PS) is lossy audio compression algorithm and a feature and an Audio Object Type (AOT) defined and used in MPEG-4 Part 3 (MPEG-4 Audio) to further enhance efficiency in low bandwidth stereo media.
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Patent pool
In patent law, a patent pool is a consortium of at least two companies agreeing to cross-license patents relating to a particular technology.
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Polyphase quadrature filter
A polyphase quadrature filter, or PQF, is a filter bank which splits an input signal into a given number N (mostly a power of 2) of equidistant sub-bands.
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Real-time Transport Protocol
The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks.
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Sample-based synthesis
Sample-based synthesis is a form of audio synthesis that can be contrasted to either subtractive synthesis or additive synthesis.
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Sound quality
Sound quality is typically an assessment of the accuracy, enjoyability, or intelligibility of audio output from an electronic device.
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SoundFont
SoundFont is a brand name that collectively refers to a file format and associated technology that uses sample-based synthesis to play MIDI files.
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Spectral band replication
Spectral band replication (SBR) is a technology to enhance audio or speech codecs, especially at low bit rates and is based on harmonic redundancy in the frequency domain.
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Speech coding
Speech coding is an application of data compression of digital audio signals containing speech.
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Speech synthesis
Speech synthesis is the artificial production of human speech.
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Structured Audio Orchestra Language
Structured Audio Orchestra Language (SAOL) is an imperative, MUSIC-N programming language designed for describing virtual instruments, processing digital audio, and applying sound effects.
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TwinVQ
TwinVQ (transform-domain weighted interleave vector quantization) is an audio compression technique developed by Nippon Telegraph and Telephone Corporation (NTT) Human Interface Laboratories (now Cyber Space Laboratories) in 1994.
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Unified Speech and Audio Coding
Unified Speech and Audio Coding (USAC) is an audio compression format and codec for both music and speech or any mix of speech and audio using very low bit rates between 12 and 64 kbit/s.
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Wavetable synthesis
Wavetable synthesis is a sound synthesis technique used to create periodic waveforms.
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Redirects here:
ISO/IEC 14496-3, MPEG-4 AAC-SSR, MPEG-4 Audio, MPEG-4 Layer 3.
References
[1] https://en.wikipedia.org/wiki/MPEG-4_Part_3
