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A Perceptually Based Audio Signal Model with Application ...
https://ccrma.stanford.edu/~jos/mus423h/Perceptually_Based_Audio_Signal.html
A Perceptually Based Audio Signal Model with Application to Scalable Compression Abstract (which is a bit long...) Audio delivery in network environments such as the Internet where bandwidth is not guaranteed, packet loss is common and where users connect to the network at various data rates demands scalable compression techniques.
Audio Compression - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/computer-science/audio-compression
Audio compression is a lossy process that relies on perceptual coding. The coder eliminates certain features of the audio stream so that the result can be encoded in fewer bits. It tries to eliminate features that are not easily perceived by the human audio system. Masking is one perceptual phenomenon that is exploited by perceptual coding. One tone can be masked …
Music and Computers - Columbia University
http://sites.music.columbia.edu/cmc/MusicAndComputers/chapter2/02_08.php
Perceptually based sound compression algorithms usually work by eliminating numerical information that is not perceptually significant and just keeping what’s important. µ-law ("mu-law") encoding is a simple, common, and important perception-based compression technique for sound data. It’s an older technique, but it’s far easier to explain here than a more sophisticated …
Scalable to lossless audio compression based on …
https://ieeexplore.ieee.org/document/1200047/
Scalable to lossless audio compression based on perceptual set partitioning in hierarchical trees (PSPIHT) Abstract: The paper proposes a technique for scalable to lossless audio compression. The scheme presented is perceptually …
A perceptually enhanced scalable- to-lossless audio coding ...
https://scl.ece.ucsb.edu/sites/scl.ece.ucsb.edu/files/assets/archive/html/NSF%20aural%20presentations/PerceptualModificationsToSLS.pdf
Signal Compression Lab, ECE, UCSB 1 A perceptually enhanced scalable-to-lossless audio coding scheme and its optimization in a trellis Emmanuel Ravelli, Vinay Melkote and Prof. Rose Signal Compression Lab Dept. of Electrical and Computer Engineering University …
A Perceptually Based Embedded Subband Speech Coder ...
http://www.seas.ucla.edu/spapl/paper/tang_sap97.pdf
quality audio compression [17]. A speech production model is not used, ensuring robustness to speech in the presence of background noise, and to nonspeech sources. High-quality compression can be achieved by incorporating masking prop-erties of the human auditory system [1], [2] to spectrally shape the quantization noise.
Audio compression - SlideShare
https://www.slideshare.net/MadhawaKasun/audio-compression-23398426
MPEG Audio Compression • Motion Picture Experts Group • An ISO standard for high-fidelity audio compression. • A lossy compression. • But can achieve transparent, perceptually lossless compression. • Compresses without regard to the source of the audio data.
ELE 201, Spring 2014 Laboratory No. 5 MP3 Audio ...
https://www.princeton.edu/~cuff/ele201/files/lab5.pdf
used to handle auditory stimuli. The hope is that once we know which aspects of audio are emphasized, we can reduce the description complexity of the parts that are de-emphasized to achieve our goal of compression. For this reason, compression techniques such as MP3 are also referred to as perceptual audio coders.
A Tutorial on MPEG/Audio Compression - MIT Media …
https://web.media.mit.edu/~tristan/Classes/MAS.945/Papers/Technical/pan96tutorial.pdf
Although MPEG/audio compression is perfectly suitable for audio-only applications, it is actually one part of a three part compression standard. Combined with the other two parts, video and systems, the MPEG standard addresses the compression of synchronized video and audio at a total bit rate of about 1.5 Megabits/sec.
Netflix now streaming with 'high-quality audio', because ...
https://www.whattowatch.com/news/netflix-now-streaming-high-quality-audio-because-your-ears-matter-too
Our high-quality sound feature is not lossless, but it is perceptually transparent. That means that while the audio is compressed, it is indistinguishable from the original source. Based on internal listening tests, listening test results provided by Dolby, and scientific studies, we determined that for Dolby Digital Plus at and above 640 kbps, the audio coding quality is …
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