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:
Feb. 17, 1981
Filed:
Feb. 01, 1979
Marc H Segan, New York, NY (US);
Sayre A Swarztrauber, New York, NY (US);
Calfax, Inc., New York, NY (US);
Abstract
A device for producing a plurality of musical tones comprises a programmed rectangular wave generator that produces a series of rectangular waves of the same amplitude for each tone. Each wave in each of the series of waves has a predetermined energy content and drives a speaker or other sound producing transducer such that the musical tone produced has the same aural qualities as that produced by a musical instrument. In the preferred embodiment the wave generator is a programmed integrated circuit microcomputer having a Read Only Memory in which are stored the sequence of notes of one or more musical compositions that are played under program control. The device is particularly adapted to produce bell tones having minimum harmonic distortion which, in combination with microminiature speakers and lights in bell shaped translucent housings and driven by the series of rectangular waves, becomes an attractive Christmas decoration that plays a number of traditional Christmas carols.