Subjective evaluation of LSF quantization in conventional and warped LP based audio coding

Markus Vaalgamaa; Aki Härmä

Subjective evaluation of LSF quantization in conventional and warped LP based audio coding

Markus Vaalgamaa, Aki Härmä

Research output: Contribution to journal › Conference article in journal › Academic › peer-review

Abstract

The objective of this study is to evaluate subjective quality of spectral envelope quantization in audio coding. In this paper, the spectral envelope is modeled using Linear Prediction (LP) and Warped Linear Prediction (WLP). The advantage of WLP compared to LP is that the frequency resolution of analysis can be modified so that it follows perceptual frequency scale, like the Bark- or ERB-scale. The coefficients in both cases are transformed into Line Spectral Frequency (LSF) parameters and quantized. The quantization of these parameters is studied and the subjective and objective qualities are compared.

Original language	English
Article number	7075767
Journal	European Signal Processing Conference
Volume	2015-March
Issue number	March
Publication status	Published - 31 Mar 2000
Externally published	Yes
Event	10th European Signal Processing Conference - Tampere, Finland Duration: 4 Sept 2000 → 8 Sept 2000 Conference number: 10

Cite this

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title = "Subjective evaluation of LSF quantization in conventional and warped LP based audio coding",

abstract = "The objective of this study is to evaluate subjective quality of spectral envelope quantization in audio coding. In this paper, the spectral envelope is modeled using Linear Prediction (LP) and Warped Linear Prediction (WLP). The advantage of WLP compared to LP is that the frequency resolution of analysis can be modified so that it follows perceptual frequency scale, like the Bark- or ERB-scale. The coefficients in both cases are transformed into Line Spectral Frequency (LSF) parameters and quantized. The quantization of these parameters is studied and the subjective and objective qualities are compared.",

author = "Markus Vaalgamaa and Aki H{\"a}rm{\"a}",

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AU - Vaalgamaa, Markus

AU - Härmä, Aki

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Y1 - 2000/3/31

N2 - The objective of this study is to evaluate subjective quality of spectral envelope quantization in audio coding. In this paper, the spectral envelope is modeled using Linear Prediction (LP) and Warped Linear Prediction (WLP). The advantage of WLP compared to LP is that the frequency resolution of analysis can be modified so that it follows perceptual frequency scale, like the Bark- or ERB-scale. The coefficients in both cases are transformed into Line Spectral Frequency (LSF) parameters and quantized. The quantization of these parameters is studied and the subjective and objective qualities are compared.

AB - The objective of this study is to evaluate subjective quality of spectral envelope quantization in audio coding. In this paper, the spectral envelope is modeled using Linear Prediction (LP) and Warped Linear Prediction (WLP). The advantage of WLP compared to LP is that the frequency resolution of analysis can be modified so that it follows perceptual frequency scale, like the Bark- or ERB-scale. The coefficients in both cases are transformed into Line Spectral Frequency (LSF) parameters and quantized. The quantization of these parameters is studied and the subjective and objective qualities are compared.

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M3 - Conference article in journal

AN - SCOPUS:84937060650

SN - 2219-5491

VL - 2015-March

JO - European Signal Processing Conference

JF - European Signal Processing Conference

IS - March

M1 - 7075767

T2 - 10th European Signal Processing Conference

Y2 - 4 September 2000 through 8 September 2000

ER -

Subjective evaluation of LSF quantization in conventional and warped LP based audio coding

Abstract

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