Sound field expanding device

Details Sound field expanding device Sound field expanding device

1976-04-12

1978-10-17

Cardillo, Jr., Raymond F.

1791004ST, G11B 3100

Patent

active

041210590

ABSTRACT:
In a sound field expanding device, left and right channel sound signals of a two channel stereo are respectively divided into several frequency bands, adjusted on levels and phases, mixed again, and then supplied to loudspeakers, so as to reproduce a natural and clear sound field expanded at most into an angle of 180.degree. around a listener. A pair of the expanding devices are used for four channel stereo to form a surrounding sound field. Sound signals derived from the expanding device can be recorded on sound discs or tapes so as to reproduce easily the expanded sound field.

REFERENCES:
patent: 2093540 (1937-09-01), Blumlein
patent: 2246593 (1941-06-01), Israel
patent: 2616970 (1952-11-01), Broos
patent: 2668880 (1954-02-01), Friess
patent: 3214519 (1965-10-01), Fouque
patent: 3217080 (1965-11-01), Clark
patent: 3236949 (1966-02-01), Atal et al.
patent: 3830978 (1974-08-01), Odagi
patent: 3943293 (1976-03-01), Bailey
patent: 3970787 (1976-07-01), Searle
Bauer, Some Techniques Toward Better Stereophonic Perspective, Reprint from IEEE Transactions on Audio, vol. AU-11, No. 3, May 6, 1963.

Affiliated with

Also associated with

Rating

Sound field expanding device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-377027