Comments on "Discrete Cosine Transform"
- 1 July 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Computers
- Vol. C-24 (7) , 759
- https://doi.org/10.1109/t-c.1975.224301
Abstract
In the above correspondence,1 Ahmed et al. proposed a discrete cosine transform (DCT) and compared its performance with the Karhunen-Loeve transform (KLT). They offered empirical evidence showing that the DCT and the KLT compare closely for a number of digital signal processing applications. The purpose of this note is to show that the DCT and the KLT are indeed asymptotically equivalent if the data covariance matrix is a Toeplitz matrix.Keywords
This publication has 1 reference indexed in Scilit:
- On the asymptotic eigenvalue distribution of Toeplitz matricesIEEE Transactions on Information Theory, 1972