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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 Fundamentals, Compression Techniques & Standards
http://ce.sharif.edu/courses/91-92/2/ce873-1/resources/root/Class%20Notes/MMN-lec3-Audio-911121.pdf
Some techniques for sound compression: PCM - send every sample DPCM - send differences between samples ADPCM - send differences, but adapt how we code them LPC - linear model of speech formation CELP - use LPC as base, but also use some bits to code corrections for the things LPC gets wrong.
An explanation of video compression techniques.
https://www.reachcambridge.com/wp-content/uploads/wp_videocompression_33085_en_0809_lo.pdf
bandwidth available. To circumvent this problem, a series of techniques – called picture and video compression techniques – have been derived to reduce this high bit-rate. Their ability to perform this task is quantified by the compression ratio. The higher the compression ratio is, the smaller is the bandwidth consumption.
Audio Compression Techniques for Music Producers
https://www.renegadeproducer.com/audio-compression.html
Below we take a quick look at the different types of compression methods you'll work with as a music producer. 1. Downward Compression This is the type of compression that most people refer to when they say compression in a studio setting. Downward compression reduces the level of signals which go over a certain set threshold .
Audio And Video Compression Techniques Ppt - Video/Audio ...
https://pptdownload.info/79492/
Application of Lempel-Ziv-Welch (LZW) Digital Video Compression (MPEG) MPEG is a series of techniques for compressing streaming digital information DVDs use MPEG coding MPEG achieves compression results on the order of 1/35 of original If we examine two still images from a video sequence of images, we will almost always find that they are …
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 …
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