Quadrature mirror filters with staggered-phase subsampling

Patent 4815023 Issued on March 21, 1989. Estimated Expiration Date:

May 4, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Digital signal processing apparatus Patent #: 4701874
Issued on: 10/20/1987
Inventor: Akai , et al.

Inventor

Arbeiter, James H.

Application

No. 07/045986 filed on 05/04/1987

US Classes:

708/301Tapped delay line

Examiners

Primary: Harkcom, Gary V.
Assistant: Shaw, Dale M.

Attorney, Agent or Firm

International Class

H03H 17/02 (20060101)

Abstract

By staggering the phases of the decimations of the subbands in a quadrature mirror filter bank odd-tap kernels may be usefully employed.

Other References

Multirate Digital Signal Processing, R. E. Crochiere and L. R. Rabiner, pp. 376-395, Prentice Hall, Englewood Cliffs, N.J. 1983
"Direct Approach To Quasi Perfect Decomposition of Speech In Sub-Bands", D. Esteban, and C. Galand, p. 852, 9th International Congress on Acoustics, Madrid, 1977
"New Quadrature Mirror Filter Structures", C. R. Galand and H. J. Nussbaumer, 0096-3518/84/0600-0522 $01.00 copyrighted 1984 IEEE
"HQMF: Halfband Quadrature Mirror Filters", D. Esteban and C. Galand, CH/1610-5/81/0000-0220 $00.75 copyrighted 1981 IEEE
"Multi-dimensional Sub-band Coding: Some Theory and Algorithms", M. Vetterli 0165-1683/84/$3.00 copyrighted 1984 Elsevier Science Publishers B.V. (North-Holland)
"An Efficient Image Representation For Multiscale Analysis", Stephane Mallat, pp. 172-175, Optical Society of America, Topical Meeting on Machine Vision, Mar. 18-20, 1987