Patent
Multichannel audio coding
Mark F. Davis
- 28 Feb 2005
221
TL;DR: In this article, the authors proposed an improved decorrelation of multiple audio channels derived from a monophonic audio channel or from multiple channels of audio along with related auxiliary information from which multiple channels can be reconstructed.
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Abstract: Multiple channels of audio are combined either to a monophonic composite signal or to multiple channels of audio along with related auxiliary information from which multiple channels of audio are reconstructed, including improved downmixing of multiple audio channels to a monophonic audio signal or to multiple audio channels and improved decorrelation of multiple audio channels derived from a monophonic audio channel or from multiple audio channels. Aspects of the disclosed invention are usable in audio encoders, decoders, encode/decode systems, downmixers, upmixers, and decorrelators.
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References
Perceptual coding of digital audio
T. Painter,Andreas Spanias +1 more
- 01 Apr 2000
TL;DR: This paper reviews methodologies that achieve perceptually transparent coding of FM- and CD-quality audio signals, including algorithms that manipulate transform components, subband signal decompositions, sinusoidal signal components, and linear prediction parameters, as well as hybrid algorithms that make use of more than one signal model.
•Journal Article
A model for the prediction of thresholds, loudness, and partial loudness
TL;DR: In this paper, a model for steady sounds is described having the following stages: 1) a fixed filter representing transfer through the outer ear, 2) an excitation pattern from the physical spectrum, 3) transformation of the excitation patterns to a specific loudness pattern, 4) determination of the area under the specific loudeness pattern, 5) determination for a given ear, and 6) summation of loudness across ears.
842
Subband/Transform coding using filter bank designs based on time domain aliasing cancellation
John Princen,Andrew Johnson,A. Bradley +2 more
- 06 Apr 1987
TL;DR: A new, oddly stacked, critically sampled, single side-band (SSB) analysis/synthesis system based on Time Domain Aliasing Cancellation (TDAC) is described in this paper.
460
•Journal Article
A Model of Loudness Applicable to Time-Varying Sounds
TL;DR: In this paper, a model for calculating the loudness of steady sounds from their spectrum using a waveform as its input is presented, which uses a finite impulse response filter representing transfer through the outer and middle ear.
446
Adaptive-block-length, adaptive-transform, and adaptive-window transform coder, decoder, and encoder/decoder for high-quality audio
TL;DR: In this article, the tradeoff between time resolution and frequency resolution is optimized by adaptively selecting the transform block length for each sampled audio segment, and/or can optimize coding gain by adapting the transform and analysis window or the analysis/synthesis window pair.
275
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