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Audio and Video Compression - SlideShare
https://www.slideshare.net/apashishp/audio-and-video-compression-64399575
AUDIO LEVEL COMPRESSION • Downward compression reduces loud sounds over a certain threshold while quiet sounds remain unaffected. • Upward compression increases the loudness of sounds below a certain threshold while leaving louder sounds unaffected. 9.
Audio and video compression - SlideShare
https://www.slideshare.net/neeraj9217/audio-and-video-compression
perceptual coding (pc) lpc and celp are used only for telephony applications and hence compression of speech signal. pc are designed for compression of general audio such as that associated with a digital television broadcast. use a psychoacoustic model (this exploits a number of limitations of human ear). using this approach, sampled …
Technical Notes on Digital Audio and Video Compression
https://www.inscapedata.com/pdf/AboutMPEG-4.pdf
Technical Notes on Digital Audio and Video Compression 1 How does digital video compression work? Similar to network standards, a number of standards have also been developed for compression of digital images. Presently, there are a number of compression techniques, each aimed at a different application.
6. Perceptual Audio Coding
https://www.cs.ucf.edu/courses/cap5015/Image%20compression%20and%20video%20compression%202004%20notes%20-%206%20Audio%20compression.pdf
1 Lecture notes of Image Compression and Video Compression series 6. Perceptual Audio Coding Prof. Amar Mukherjee Weifeng Sun #2 Topics zIntroduction to Image Compression zTransform Coding zSubband Coding, Filter Banks zIntroduction to Wavelet Transform zWavelet Image Compression zPerceptual Audio Coding zVideo Compression
Notes on video compression and compression standards
http://people.cc.ku.edu/~grobe/intro-compression/
In general, it means that sounds and images are converted to electronic signals as voltages or amperages in amplitudes that are "analogous" to the strength of the signals (hence the term "analog"). For example, sound is composed of sound "waves" that can be
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