Steven E. Turner
Engineering at Seina Vis Dr, Madison, AL
License number
Louisiana EI.0006635
Issued Date
Jul 24, 1979
Expiration Date
Mar 31, 2018
Category
Civil Engineer
Address
Address
770 Seina Vista Dr, Madison, AL 35758
Professional information
Adaptive Passband Echo Canceller
US Patent:
4969144, Nov 6, 1990
Filed:
Jan 3, 1989
Appl. No.:
7/292848
Inventors:
Steven R. Blackwell - Huntsville AL
Steven E. Turner - Madison AL
Michael D. Turner - Madison AL
Jerry D. Moore - Huntsville AL
Steven E. Turner - Madison AL
Michael D. Turner - Madison AL
Jerry D. Moore - Huntsville AL
Assignee:
Universal Data Systems, Inc. - Huntsville AL
International Classification:
H04B 323
US Classification:
370 321
Abstract:
A passband echo canceller achieves improved performance by providing a signal having a substantially uniform power spectral density to an adaptive echo canceller; the improved input signal is substantially uniform from approximately zero hertz to one half the operating or sample frequency of the echo canceller. This signal may comprise that range of frequencies occupied by the transmitted spectrum with added out of band noise.