Wayne A Olson

US Patent:

52260003, Jul 6, 1993

Filed:

May 31, 1991

Appl. No.:

7/708912

Inventors:

Robert W. Moses - Seattle WA
Raymond S. Miller - Seattle WA
Charles H. Hustig - Hudson WI
Donald W. Moses - Eagan MN
Robert S. Bradford - Woodland Hills CA
Jeffrey L. Ward - Hudson WI
Wayne P. Olson - River Falls WI
Janice L. Cox - St. Paul MN
James M. Kresse - Marlton NJ

Assignee:

Wadia Digital Corporation - River Falls WI

International Classification:

G06F 1531

US Classification:

36472410

Abstract:

A method and system is provided for a digital audio system to reconstruct a digital audio signal using time domain interpolation and direct power digital-to-analog conversion. A signal processor performs the time domain interpolation on an original digital audio signal to allow for the proper recreation of the original audio signal and a direct power output digital-to-analog converter generates an analog power audio output signal from the interpolated digital audio signal that can directly drive a speaker to produce the sound waves represented by the audio output signal. The signal processor and direct power output digital-to-analog converter allow a digital audio system to more precisely reconstruct an analog power output audio signal from a digital audio signal such that there is no need for further amplification of the audio output signal and such that there will be no perceptible difference between the reconstructed digital signal and the original analog signal.