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. 02, 1995
Filed:
Oct. 26, 1993
Taichi Kosugi, Shizuoka, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Hamatsu, JP;
Abstract
An envelope generator for an electronic musical instrument, in which a current value of the envelope approaching asymptotically to a target level, using a subtracter means for subtracting from data representing the target level in a floating point representation, data representing the difference between the target level and the current value in a floating point representation with deeming these data as fixed point data each having a decimal point between an exponent part and a fractional part, and a comparator for comparing the output of the subtracter means with a predetermined constant, and for judging that an envelope phase transfer condition is met if the output of the subtracter is greater than the constant. The envelope generator can achieve a phase transfer control function substantially similar to prior art envelope generators by a small amount of hardware.