The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1978
Filed:
Jul. 16, 1976
Robert A Berkovitz, Lexington, MA (US);
Teledyne Industries, Inc., Los Angeles, CA (US);
Abstract
A sound reproduction arrangement and audio signal delay apparatus suitable for use in such an arrangement, includes, in a listening area, one or more primary sound sources for mono- or multichannel reproduction respectively, and a plurality of secondary sources spaced around the perimeter of the listening area and each providing an acoustic signal corresponding to that from the primary source or sources delayed by a respective and independently selectable delay constant and attenuated by a respective and independently selectable gain constant. Control apparatus is connected with the sound sources to derive a plurality of signals for the respective sound sources from an input signal. The delay constants are substantially greater than the time taken for sound to traverse the listening area, so that the sound from the secondary sources simulates reverberation or reflected sound, and a listener has a sensation of spaciousness normally associated with an enclosure which is larger than the listening area, such as a concert hall, for example. Features of the invention include a random-access memory which stores time-multiplexed data representing sampled input audio and channel-control information.