HIGHER-ORDER DIFFERENTIAL ENERGY OPERATORS

被引：83

作者：

MARAGOS, P

POTAMIANOS, A

机构：

[1] Schlool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta

来源：

IEEE SIGNAL PROCESSING LETTERS | 1995年 / 2卷 / 08期

基金：

美国国家科学基金会;

关键词：

Signal processing;

D O I：

10.1109/97.404130

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Instantaneous signal operators Upsilon(k)(x) = xx((k-1)) - xx((k)) of integer orders k are proposed to measure the cross energy between a signal x and its derivatives, These higher order differential energy operators contain as a special case, for k = 2, the Teager-Kaiser operator. When applied to (possibly modulated) sinusoids, they yield several new energy measurements useful for parameter estimation or AM-FM demodulation. Applying them to sampled signals involves replacing derivatives with differences that lead to several useful discrete energy operators defined on an extremely short window of samples.

引用

页码：152 / 154

页数：3

共 8 条

[1]

ATLAS L, 1992, MAR P IEEE ICASSP 92, P9

[2]

FERTIG L, UNPUB IEEE SIGNAL PR

[3]

Kaiser J. F., 1990, AC SPEECH SIGN PROC, P381

[4]

KAISER JF, 1990, 4TH P IEEE DIG SIGN

[5]

KAISER JF, 1993, APR P IEEE ICASSP 93, P9

[6]

KAISER JF, 1994, COMMUNICATION NOV

[7] ENERGY SEPARATION IN SIGNAL MODULATIONS WITH APPLICATION TO SPEECH ANALYSIS [J].

MARAGOS, P ;

KAISER, JF ;

QUATIERI, TF .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1993, 41 (10) :3024-3051

[8] ON AMPLITUDE AND FREQUENCY DEMODULATION USING ENERGY OPERATORS [J].

MARAGOS, P ;

KAISER, JF ;

QUATIERI, TF .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1993, 41 (04) :1532-1550

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