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AES E-Library » Compression Artifacts in Perceptual Audio ...
https://www.aes.org/e-lib/browse.cfm?elib=13706#:~:text=Perceptual%20audio%20coding%20achieves%20high%20compression%20ratio%20by,artifacts%20sounding%20very%20different%20from%20the%20traditional%20distortions.
6. Perceptual Audio Coding
https://www.cs.ucf.edu/courses/cap5015/Image%20compression%20and%20video%20compression%202004%20notes%20-%206%20Audio%20compression.pdf
Perceptual Audio Compression zThe basis of the Perceptual Codecs is Psychoacoustic Masking. zAn audio file will contains sounds that are not heard by us, even though these sounds lie within the human audible range. zMasking Techniques: zFrequency (Concurrent) Masking zTemporal Masking #18 Dynamic Range of Hearing
Perceptual Coding: How MP3 Compression Works
https://www.soundonsound.com/techniques/perceptual-coding-how-mp3-compression-works
Perceptual coding represents a move away from the idea that digital audio systems should accurately reproduce waveforms to the idea that they should be able to reproduce our perception of a waveform. The generic name for this system is Pulse Code Modulation (PCM), and it is used in all modern samplers, digital recorders and computer audio interfaces.
Perceptual Coding of Digital Audio - MP3'Tech
http://www.mp3-tech.org/programmer/docs/audiopaper1.pdf
a. generic perceptual audio coding architecture This review considers several classes of analysis-synthesis data compression algorithms, including those which manipu- late: transform components, time-domain sequences from critically sampled banks of bandpass filters, sinusoidal signal
Audio Compression using Entropy Coding and Perceptual ...
https://ccrma.stanford.edu/~kapilkm/422/Audio%20Compression%20using%20Entropy%20Coding%20and%20PNS-1.pdf
the first one is “Perceptual Noise Substitution” (PNS) and the second is “Entropy Coding” (more specifically, Huffman Coding). PNS is a lossy compression technique that is based on the assumption that all white noise sounds similar to the human being. The
Perceptual Coding - MIT
http://web.mit.edu/6.02/www/f2006/handouts/bits_perceptualcoding.pdf
6.082 Fall 2006 Perceptual Coding, Slide 11 Summary • Perceptual model can identify information that can be removed without being missed • DCT is well-suited for media compression – Boundary conditions for block-to-block continuity – Energy compaction properties • Non-uniform quantization – Adjust steps according to amplitude
Fundamentals of Perceptual Audio Coding
https://ocw.mit.edu/courses/health-sciences-and-technology/hst-723j-neural-coding-and-perception-of-sound-spring-2005/labs/fmntlprcptlaudio.pdf
• Perceptual Audio Encoding is the encoding of audio signals, incorporating psychoacoustic knowledge of the auditory system, in order to reduce the amount of bits necessary to faithfully reproduce the signal. • MPEG-1 Layer III (aka mp3) • MPEG-2 Advanced Audio Coding (AAC)
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