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:
Jan. 18, 2005
Filed:
Dec. 21, 1999
Haruhiko Motohashi, Tokyo, JP;
Yasuhiko Mori, Toride, JP;
Mikio Nagashima, Hachiouji, JP;
Korg Incorporated, , JP;
Abstract
A high pass filterhaving a cut-off frequency of 200 Hz and a cut-off response of +12 dB/OCT and a low pass filterhaving a cut-off frequency of 400 Hz and a cut-off response steeper than −24 dB/OCT are used to pick out components in a double overtone region of 200˜400 Hz of a bass musical instrument such as a base or a bass drum from an input audio signal. The component which is picked out is input to distortion applying meanshaving an input-output response which is a non-linear response having no point symmetry with respect to 0 point, thus applying a distortion to cause even-numbered overtone components to be produced. An output from the distortion applying meansand the input audio signal are summed in a summerto be delivered. Natural tones which have boosted bass tones and which are free from impurity are obtained.