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:
May. 19, 1998
Filed:
Oct. 10, 1995
Mineo Kitamura, Hamamatsu, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Abstract
An electronic keyboard instrument for reproducing reflected sound generated by an acoustic piano and providing the feeling that sound is reflected and shifted. Left and right system sound signals are generated corresponding to the position of a depressed key on a keyboard. The sound signals are processed through a digital signal processor, a digital-to-analog converter and amplifiers. The processed sound signals are transmitted to left and right loudspeakers. The digital sound processor is composed of filters for extracting predetermined frequency components from each of the sound signals, delay elements for transmitting outputs from the filters with a delay of predetermined time, and adders for adding outputs from the delay elements to the original left and right system sound signals.