Discrete representation of signals on a logarithmic frequency scale

被引：5
|
作者：
Härmä, A [1 ]
Paatero, T [1 ]
机构：
[1] Agere Syst, Media Signal Proc Res, Murray Hill, NJ 07974 USA
来源：
PROCEEDINGS OF THE 2001 IEEE WORKSHOP ON THE APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS | 2001年
关键词：
D O I：
10.1109/ASPAA.2001.969537
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Logarithmic frequency representation plays an important role in many audio and acoustic signal processing applications. This article presents a methodology for frequency-warped signal processing where the frequency representation is logarithmic above a certain limit frequency. It is demonstrated how this approach can be used with FFT or linear prediction to perform non-parametric, or parametric constant-Q spectrum analysis, respectively. The benefits of the use of logarithmic frequency representation are demonstrated with harmonic signals. It is also discussed how linear filters can be designed and implemented directly on a logarithmic frequency scale.
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页码：39 / 42
页数：4
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