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:
Apr. 01, 1986
Filed:
May. 05, 1983
Mikiharu Matsuoka, Tokyo, JP;
Hirohiko Katayama, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A display device for providing assistance in phonation training or the like has a microphone, comparators, latch circuits, and LED's. When a teacher produces reference sounds, his voice spectrum is displayed on a screen by red LED's, for example, and is continuously displayed until commanded otherwise. Then, a student practices and his voice spectrum is displayed on the same screen by green LED's. The student can repeatedly practice by erasing his voice spectrum until the two spectra coincide with each other. A teacher's voice spectrum may be stored in a ROM or the like in advance. When a student wishes to practice, the teacher's voice spectrum may be read out from the ROM and displayed on the screen. The student can then practice in a similar manner.