Audio Coding
Theory and Applications
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148 Result(s)
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Yuli **e
Engineering
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Article
Isotropic/orthotropic two-layered strips containing cracks terminating at and going through an interface
Crack problems for isotropic/orthotropic two-layered strips have been investigated. A system of two singular integral equations can be derived by using Fourier integral transformation and boundary conditions o...
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Article
Solvent Extraction off Scandium from Wolframite Residue
The particular properties of scandium make it an attractive candidate for recovery by solvent extraction—one of the most important processes in hydrometallurgy for the separation, purification and concentratio...
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Article
Mixed mode interface crack in a pure power-hardening bimaterial
Analytical and numerical analysis of the dominant singularity solutions of the stress and strain field near an interface crack in a pure power-hardening bimaterial indicates that the crack stress singularity i...
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Chapter
Visualization and Identification of Vortex Structures in Stratified Wakes
Isolated eddies and coherent structures (vortex arrays) effect the drag and lift acting upon obstacles in a flow, energy and contaminants transfer, flow structure and stability. They are widely studied in phys...
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Chapter and Conference Paper
Low-Dimensional Models of Flow Over a Body of Revolution at High Incidence
The asymmetric part of flow over a body of revolution at high angle of attack is considered as coherent structures of the flow and a method of Proper Orthogonal Decomposition (POD) is applied to construct its ...
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Chapter
Mixture Matrix Identification of Underdetermined Blind Source Separation Based on Plane Clustering Algorithm
Underdetermined blind source separation and sparse component analysis aim at to recover the unknown source signals under the assumption that the observations are less than the source signals and the source sig...
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Article
On the Interaction of Turbulent Shear Layers with Harmonic Perturbations
The problem of coherent perturbations in a turbulent shear layer is considered for the purpose of develo** a mathematical model based on a triple decomposition that extracts the coherent components of random...
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Article
Schlieren visualization of vortices and internal waves generated by vertical stroke oscillations of a disk
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Article
A Design of Segmented Data Rates for Recurrent Channel Estimation
In a conventional pilot-symbol assisted modulation design, the signals of a short period are composed of the pilot tones and an information symbol block. For improving the accuracy of the channel estimate, som...
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Book
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Chapter
Implementation Issues
The various audio coding technologies presented in earlier chapters need to be stitched together to form a complete audio coding algorithm, which in turn needs to be implemented on a physical platform such as ...
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Chapter
Introduction
Sounds are physical waves that propagate in the air or other media. Such waves, whichmay be expressed as changes in air pressure,may be transformed by an analog audio system using a transducer, such as a micro...
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Chapter
Vector Quantization
The scalar quantization discussed in Chap. 2 quantizes the samples of a source signal one by one in sequence. It is simple because it deals with only one sample each time, but it can only achieve so much for q...
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Chapter
Transform Coding
Transform coding (TC) is a method that transforms a source signal into another one with a more compact representation. The goal is to quantize the transformed signal in such a way that the quantiza...
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Chapter
Cosine-Modulated Filter Banks
Between the KLT transform coder and the ideal subband coder, there are many subband coders which offer great energy compaction capability with a reasonable implementation cost. Prominent among them are cosine ...
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Chapter
Huffman Coding
Now that we are assured that, given a probability distribution, if there is an optimal uniquely decodable code, there is a prefix-free code with the same average codeword length, the next step is the construct...
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Chapter
Joint Channel Coding
Multichannel audio signals or programs, including the most widely used stereo and 5.1 surround sounds, are considered as consisting of discrete channels. Since a multichannel signal is intended for reproductio...
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Chapter
Quality Evaluation
Since removal of perceptual irrelevance through quantization contributes the largest part of compression for a lossy audio coder, significant distortion or impairment is inherent in the reconstructed audio sig...
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Chapter
Scalar Quantization
An audio signal is a representation of sound waves usually in the form of sound pressure level that varies with time. Such a signal is continuous both in value and time, hence carries an infinite amount of inf...
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Chapter
Linear Prediction
Let us consider the source signal \(\rm x(n)\) shown at the top of Fig.4.1. A simple approach to linear prediction is to just use the p...
