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Advanced Audio Coding - Wikipedia
https://en.wikipedia.org/wiki/Advanced_Audio_Coding#:~:text=Advanced%20Audio%20Coding%20%28AAC%29%20is%20an%20audio%20coding,as%20part%20of%20the%20MPEG-2%20and%20MPEG-4%20specifications.
Audio Encode Decode Software | Adaptive Digital …
https://www.adaptivedigital.com/audio-algorithms/
The Adaptive Digital Technologies MPEG4-AAC (LC/LTP) encoder compresses audio to low bit rates while maintaining near CD quality. MPEG4 AAC Low complexity (LC) Object type of the standard for up to 2 channels (stereo). …
Adaptive Transform Acoustic Coding Wiki
https://everipedia.org/ATRAC3
Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony. MiniDisc was the first commercial product to incorporate ATRAC in …
Efficient Signal Adaptive Perceptual Audio Coding
http://wseas.us/e-library/conferences/2005corfu/c1/papers/498-409.pdf
In this work we present a new strategy for the adaptation of subband configurations to changes in audio signal, with an aim of improving the coding gain/compression ratio. The approach results in an improved quality of reconstruction compared to MPEG-1 Layer-3 at similar bit rates or alternately a reduced bit rate at similar quality.
Hybrid Low Bitrate Audio Coding Using Adaptive Gain …
https://www.microsoft.com/en-us/research/publication/hybrid-low-bitrate-audio-coding-using-adaptive-gain-shape-vector-quantization/
In this paper we present a novel scheme to code audio signals at low bitrates which uses a traditional scalar quantization followed by entropy coding to code some portions of the spectrum (typically the lower portion). The other portions (typically the higher portions) of the spectrum are coded at a low bitrate using an adaptive gain shape vector quantizer where the …
Hybrid Low Bitrate Audio Coding Using Adaptive Gain …
https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/AudioCodingGSVQFinal.pdf
spectrum using adaptive vector quantization. Vector quantization (VQ) has also been proposed for use in audio coding such as the TwinVQ work [3], [4], [5] that is also part of the MPEG standard. However, existing vector quantization approaches have difficulty in that the codebooks are pre-trained and thus the coding quality is sometimes not as good.
Audio Coding - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/computer-science/audio-coding
The DCC scheme is called precision adaptive subband coding or PASC, the MiniDisc system is called adaptive transform acoustic coding (ATRAC). The PASC algorithm is essentially the same as the ISO/MPEG Layer 1 algorithm. The ATRAC coder is reported by Tsutsui et al. [242] and PASC is described by Lockhoff [161].
Audio Fundamentals, Compression Techniques & Standards
http://ce.sharif.edu/courses/91-92/2/ce873-1/resources/root/Class%20Notes/MMN-lec3-Audio-911121.pdf
Audio Coding (cont.) In general, producing quantized sampled output for audio is called PCM (Pulse Code Modulation). The differences version is called DPCM (and a crude but efficient variant is called DM). The adaptive version is called ADPCM. 21 Digital Media Lab - Sharif University of Technology
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