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Advanced Audio Coding - Wikipedia
https://en.wikipedia.org/wiki/Advanced_Audio_Coding#:~:text=%20Functionality%20%201%20The%20MPEG-4%20audio%20coding,transform%20%28%20MDCT%29%20together%20with%20the...%20More%20
MPEG-4 General Audio Coding - Massachusetts Institute of ...
https://sound.media.mit.edu/resources/mpeg4/audio/general/aes106_1-GeneralAudio.pdf
• MPEG-4 General Audio Coding: The “all-round” coding system among the MPEG-4 audio schemes, providing a set powerful tools • Based on MPEG-2 Advanced Audio Coding kernel • Several enhancements for improved coding efficiency • Perceptual Noise Substitution (PNS): Exploiting noise-like components in the signal • Long Term Prediction (LTP):
Advanced Audio Coding (MPEG-4) - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000114.shtml
MP4_FF_2_AAC, MPEG-4 File Format, V.2, with Advanced Audio Coding: Used by: QTA_AAC, QuickTime AAC: Used by: MP4_FF_2_V, MPEG-4 File Format, Version 2, with Visual Coding: Used by: MP4_FF_2_AVC, MPEG-4 File Format, Version 2, with Advanced Video Coding: Used by: MP4_FF_2_AVC_BP, MPEG-4 File Format, V.2, with AVC, Baseline Profile
MPEG-4 natural audio coding - MP3'Tech
http://www.mp3-tech.org/programmer/docs/audio.pdf
from low bit-rate speech coding to high-quality audio coding or music synthesis. The natural coding part within MPEG-4 audio describes traditional type speech and high-quality audio coding algorithms and their combination to enable new functionalities like scalability (hierarchical coding) across the boundaries of coding algorithms. This paper
MPEG-4 natural audio coding - ScienceDirect
https://www.sciencedirect.com/science/article/pii/S0923596599000569
The tools defined by MPEG-4 natural audio coding can be combined to different audio coding algorithms. Since no single coding paradigm was found to span the complete range from very low bit-rate coding of speech signals up to high-quality multi-channel audio coding, a set of different algorithms has been defined to establish optimum coding efficiency for the …
Audio | MPEG
https://mpeg.chiariglione.org/standards/mpeg-4/audio
Introduction. MPEG-4 SBR, (Spectral Band Replication) is a bandwidth extension tool used in combination with e.g. the AAC general audio codec. When integrated into the MPEG AAC codec, a significant improvement of the performance is available, which can be used to lower the bitrate or improve the audio quality.
Audio Coding | MPEG
https://mpeg.chiariglione.org/technologies/media-coding/audio-coding
Unified Speech and Audio Coding. Specification of a Unified Speech and Audio compression format. MPEG-D. 4. Dynamic Range Control. A universal dynamic range control standard that supports loudness normalization that is bitrate efficient representation of dynamically compressed versions of an audio signal.
MPEG-4 Audio - MultimediaWiki
https://wiki.multimedia.cx/index.php/MPEG-4_Audio
MPEG-4 Audio. MPEG-4 includes a system for handling a diverse group of audio formats in a uniform matter. Each format is assigned a unique Audio Object Type (AOT) to represent it. The common format Global header shared by all AOTs is called the Audio Specific Config. Subparts. Subpart 0: Overview; Subpart 1: Main (Systems Interaction) Subpart 2: Speech coding - HVXC
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