Kevin E Christian

US Patent:

55662374, Oct 15, 1996

Filed:

Feb 3, 1994

Appl. No.:

8/191512

Inventors:

James F. Dobbs - Irving TX
Kevin S. Christian - Seattle WA

Assignee:

Dobbs-Stanford Corporation - Dallas TX

International Classification:

H03G 500

US Classification:

381103

Abstract:

An audio selection circuit (10) having time selectable equalization, comprising a plurality of inputs (24, 26) for coupling the audio selection circuit to a plurality of audio signal sources, a variable equalization circuit (32) having an equalization input and an equalization output, the variable equalization circuit (32) providing variable attenuation in a plurality of frequency bands to an audio signal coupled to the equalization input, processing means (12) operatively coupled to the plurality of inputs (24, 26) and to the variable equalization circuit (32), memory means (12) operatively coupled to the processing means (12) and timebase means (14) operatively coupled to the processing means (12), the timebase means (14) enabling the processing means (12) to determine a time of day, wherein the processing means (12) is operative to couple one of the plurality of inputs (24, 26) to the equalization input and to vary the attenuation of the variable equalization circuit (32) when the time of day is equal to or past a stored time of day stored in the memory (12), the coupling of one of the plurality of inputs (24, 26) and the varying of the attenuation being done according to parameters stored in the memory. Other systems, devices and methods are disclosed.