TY - JOUR

T1 - Variable Dimension Trellis-Coded Quantization of Sinusoidal Parameters

A1 - Larsen,Morten Holm

A1 - Christensen,Mads G.

A1 - Jensen,Søren Holdt

AU - Larsen,Morten Holm

AU - Christensen,Mads G.

AU - Jensen,Søren Holdt

PB - I E E E

PY - 2008

Y1 - 2008

N2 - In this letter, we propose joint quantization of the parameters of a set of sinusoids based on the theory of trellis-coded quantization. A particular advantage of this approach is that it allows for joint quantization of a variable number of sinusoids, which is particularly relevant in variable rate parametric audio coding.<br/>Under high-resolution assumptions and based on a perceptually relevant distortion measure, we derive analytical expressions for the optimal design subject to an entropy constraint. Numerical experiments show a significant performance gain compared to optimal spherical quantization at the cost of a slight increase in computational complexity.<br/>

AB - In this letter, we propose joint quantization of the parameters of a set of sinusoids based on the theory of trellis-coded quantization. A particular advantage of this approach is that it allows for joint quantization of a variable number of sinusoids, which is particularly relevant in variable rate parametric audio coding.<br/>Under high-resolution assumptions and based on a perceptually relevant distortion measure, we derive analytical expressions for the optimal design subject to an entropy constraint. Numerical experiments show a significant performance gain compared to optimal spherical quantization at the cost of a slight increase in computational complexity.<br/>

JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

SN - 1070-9908

VL - 15

SP - 17

EP - 20

ER -