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Digital Audio Compression - Columbia University
https://www.ee.columbia.edu/~dpwe/papers/Pan93-acomp.pdf
Digital Audio Compression Adaptation to the audio signal takes place only in the quantizer block. The quantizer adapts the step size based on the current step size and the quan-tizer output of the immediately previous input. This adaptation can be done as a sequence of two table
Audio Compression - Signals Systems1
http://www.signal.uu.se/Courses/CourseDirs/SignSyst/rapporter/AudioHBV.pdf
Audio compression Abstract We discuss different aspects of audio compression, starting with several methods of compressing audio. Methods of quantization of a signal and how different psychoacoustic models can be used are described. Some areas where applicability of speech compression is high are studied, a few methods are considered.
Audio Compression Techniques
https://www.mpi.nl/corpus/a4guides/a4-guide-audio-compression.pdf
The algorithms are “psycho-acoustically” based compression techniques, since they claim to reduce information in the sound signal that cannot be heard by the human ear anyhow. Audio Compression Techniques Linear PCM (pulse code modulation) is a direct digitization technique for sound waves. At equidistant moments in time
Lecture 7: Audio compression and coding
https://www.ee.columbia.edu/~dpwe/e6820/lectures/L07-coding.pdf
I transform signal to have uniform pdf I nonuniform quantization for equiprobable tokens I variable-length tokens !Hu man coding E6820 (Ellis & Mandel) L7: Audio compression and coding March 31, 2009 9 / 37
A Tutorial on MPEG/Audio Compression
https://web.media.mit.edu/~tristan/Classes/MAS.945/Papers/Technical/pan96tutorial.pdf
perceptually irrelevant parts of the audio signal. Removal of such parts results in inaudible distortions, thus MPEG/audio can compress any signal meant to be heard by the human ear. In keeping with its generic nature, MPEG/audio offers a diverse assortment of compression modes: • The audio sampling rate can be 32, 44.1, or 48 kHz.
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