On Asymmetrical Performance of Discrete Cosine Transform

Document Type

Article

Publication Date

1-1-1990

Abstract

The Discrete Cosine Transform (DCT) [1] is considered as a suboptimum transform for many practical source coding applications. Autoregressive, order 1, AR(1) source models are good first approximations to several natural signals. It is known that the performance of DCT depends on the sign of the autocorrelation coefficient of AR(1) source. This correspondence explains theoretically the asymmetrical performance of DCT along with the Modified Hermite Transform (MHT) [2] and Discrete Hadamard Transform (DHT) which performs symmetrically regardless of the sign of autocorrelation coefficient. © 1990 IEEE

Identifier

0025211616 (Scopus)

Publication Title

IEEE Transactions on Acoustics Speech and Signal Processing

External Full Text Location

https://doi.org/10.1109/29.45628

ISSN

00963518

First Page

154

Last Page

156

Issue

1

Volume

38

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