Time zone equalizer

Details Time zone equalizer Time zone equalizer

1994-02-03

1996-10-15

Isen, Forester W.

Electrical audio signal processing systems and devices

Including frequency control

Having automatic equalizer circuit

333 28R, H03G 500

Patent

active

055662374

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.

REFERENCES:
patent: 2650272 (1953-08-01), Gavigan
patent: 3315167 (1967-04-01), Goldwasser
patent: 4024411 (1977-05-01), Bengoa
patent: 4079366 (1978-03-01), Wong
patent: 4184050 (1980-01-01), Yuter
patent: 4228543 (1980-10-01), Jackson
patent: 4279012 (1981-07-01), Beckedorff et al.
patent: 4292467 (1981-09-01), Odlen et al.
patent: 4306115 (1981-12-01), Humphrey
patent: 4363001 (1982-12-01), Suzuki et al.
patent: 4368408 (1983-01-01), Marcus
patent: 4570216 (1986-02-01), Chan
patent: 4635121 (1987-01-01), Hoffman et al.
patent: 4641344 (1987-02-01), Kasai et al.
patent: 4644106 (1987-02-01), Yeh
patent: 4954899 (1990-09-01), Tanabe et al.
patent: 5081707 (1992-01-01), Schorman et al.
patent: 5241696 (1993-08-01), Mori et al.

Affiliated with

Also associated with

Rating

Time zone equalizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time zone equalizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time zone equalizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1253308