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检索条件"主题词=Audio coding"
1195 条 记 录,以下是241-250 订阅
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Noiseless coding of quantized spectral components in MPEG-2 Advanced audio coding
Noiseless coding of quantized spectral components in MPEG-2 ...
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IEEE Workshop on Applications of Signal Processing to audio and Acoustics
作者: S.R. Quackenbush J.D. Johnston AT and T Laboratories Murray Hill NJ USA
Advanced audio coding (AAC), part of ISO/MPEG-2, issued as an international standard in April, 1997. It supports single or multiple channel audio programs and delivers excellent audio quality at or below 64 kbps/chann... 详细信息
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Perceptual suppression of quantization noise in low bitrate audio coding
Perceptual suppression of quantization noise in low bitrate ...
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Asilomar Conference on Signals, Systems & Computers
作者: Y.H. Lam R.W. Stewart Signal Processing Division Department of Electrical & Electronic Engineering University of Strathclyde Glasgow UK
In this paper a generalized perceptual filter which aims to reduce the audible quantization noise in low bitrate audio coding is presented. The perceptual filter is based on a human auditory perception model whereby i... 详细信息
来源: 评论
An improved stereophonic coding scheme compatible to the ISO/MPEG audio coding algorithm
An improved stereophonic coding scheme compatible to the ISO...
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International Conference on Communication Systems
作者: Do-Hui Teh Ah-Peng Tan A/V Information Research Centre Asia Matsushita Electric (S) Private Limited Singapore
Stereophonic coding has been applied to the ISO/MPEG audio coding algorithm to improve the quality of stereo signals at very low bit rates. While reasonable quality has been achieved at bit rates of 2*64 kbit/s or low... 详细信息
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A fast noise-scaling algorithm for uniform quantization in audio coding schemes
A fast noise-scaling algorithm for uniform quantization in a...
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: C.A. Serantes A.S. Pena N.G. Prelcic E.T.S.E. Telecomunicación Universidad de Vigo Vigo Spain
A new bit assignment algorithm is presented. Its goals are the simultaneous assignment on all subbands in a few steps of an iterative calculus, the use of memory to achieve a better speed of convergence and the consid... 详细信息
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Low bitrate audio coding using generalized adaptive gain shape vector quantization across channels
Low bitrate audio coding using generalized adaptive gain sha...
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: Sanjeev Mehrotra Wei-ge Chen Kishore Kotteri Microsoft Research Microsoft Corporation Redmond WA USA
audio coding at low bitrates suffers from artifacts due to spectrum truncation. Typical audio codecs code multi-channel sources using transforms across the channels to remove redundancy such as middle (mid) - side (M/... 详细信息
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A comparison of differential schemes for low-rate sinusoidal audio coding
A comparison of differential schemes for low-rate sinusoidal...
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IEEE Workshop on Applications of Signal Processing to audio and Acoustics
作者: J. Jensen R. Heusdens Department of Mediamatics Delft University of Technnology Delft Netherlands
Sinusoidal coding plays an important part in low rate audio coding. Typically, differential techniques are employed to reduce the bit rate for the representation of sinusoidal parameters. We compare several schemes fo... 详细信息
来源: 评论
a Family of Random Waveform Models for audio coding
a Family of Random Waveform Models for Audio Coding
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: M. Kowalski B. Torresani LATP CMI Marseilles France
We study the behavior of hybrid random waveform models for audio signals, involving sparse random series of waveforms, with random coefficients. Similar approaches have been considered in the recent years. However, th... 详细信息
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Comparison of filterbanks for high quality audio coding
Comparison of filterbanks for high quality audio coding
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IEEE International Symposium on Circuits and Systems (ISCAS)
作者: K. Brandenburg E. Eberlein J. Herre B. Edler Lehrstuhl für Technische Elektronik Universität Erlangen Nürnberg Erlangen Germany Institut für integrierte Schooltumgen Fraunhofer Gesellschaft e. V. Erlangen Germany Institut für Theoretische Nachrichtentechuik und Informationsverarbeitung Universität Hannover Hanover Germany
Perceptual coding techniques have recently been applied successfully to high-quality coding of digital audio signals. The basic perceptual coding system uses an analysis/synthesis system to map the time-domain data in... 详细信息
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Algebraic quantization of transform coefficients for embedded audio coding
Algebraic quantization of transform coefficients for embedde...
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: M. De Meuleneire H. Taddei D. Pastor Nokia Siemens Networks COO RTP PT HWCT Computing Techn SDE Munich Germany Department SC ENST Bretagne Technopole Brest Iroise Brest France
This paper proposes a new quantization for transform coefficients based on algebraic quantization. The coefficients are represented by a few pulses multiplied by a unique amplitude. The coefficients to be transmitted ... 详细信息
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A Comparative Study of Lossless audio coding Schemes
A Comparative Study of Lossless Audio Coding Schemes
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International Conference on Computer Engineering and Systems
作者: Hend Ali Elsayed Masoud Alghoniemy Mohammed El-Banna Electrical Engineering Department Alexandria University Alexandria Egypt
In this paper, we present a comparative study of different lossless audio coding schemes, which are implemented using different integer transforms. The audio signal under consideration, which is assumed to be integer-... 详细信息
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