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. 22, 1994
Filed:
Jan. 14, 1993
Gen Izumisawa, Hamamatsu, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu, JP;
Abstract
A tone generating apparatus which comprises a wave memory in which first tone waveform data with a preselected length extracted from an attack portion of a musical tone and second tone waveform data with a preselected length following the first tone waveform data and having a value of zero are stored. A read circuit reads the first tone waveform data only once from the wave memory and subsequently reads the second tone waveform data repeatedly. A tone generator generates a musical tone based on the tone waveform data read out by the read circuit. In reading out tone waveform data from the wave memory, the first tone waveform data is read out first, followed by repetitive reading of only the second tone waveform data. Repetitive reading of the second tone waveform data produces no sound because the contents of the second tone waveform data are zero. Thus, this system performs a function equivalent to tone release effected by reading out a one-shot waveform.