Title:
METHOD OF EXTRACTING PURE TONE COMPOSING COMPLEX TONE
Document Type and Number:
WIPO Patent Application WO/2022/019425
Kind Code:
A1
Abstract:
A method of extracting a pure tone composing a complex tone according to an embodiment of the present invention, each step of which is performed by a computer, comprises the steps of: (a) modeling vibratory motions of a plurality of springs having different natural frequencies to calculate the amplitudes of the plurality of springs at a current time, respectively; (b) calculating, assuming that an input pure tone is input uniformly and continuously, a stable state expected amplitude for each of the plurality of springs, which is expected at a current time, on the basis of an amplitude at the current time and an amplitude at a previous time; and (c) calculating, on the basis of energy of the springs corresponding to the stable state expected amplitude, an estimated pure tone amplitude for each of the plurality of springs at a current time.
Inventors:
KIM DONG JIN (KR)
Application Number:
PCT/KR2021/001807
Publication Date:
January 27, 2022
Filing Date:
February 10, 2021
Export Citation:
Assignee:
BRAINSOFT INC (KR)
International Classes:
G10L15/02; G10L21/0272; G10L25/15
Domestic Patent References:
| WO2020145509A2 | 2020-07-16 |
Foreign References:
| JP2017042232A | 2017-03-02 | |||
| JP2010102129A | 2010-05-06 | |||
| KR20090012154A | 2009-02-02 |
Other References:
QUATIERI, THOMAS F.: "Discrete-Time Speech Signal Processing: Principles and Practice", 1 January 2002, PRENTICE HALL PTR , US , ISBN: 0-13-242942-X, article THOMAS F. QUATIERI: "4.3.2 Effect of Energy Loss", pages: 127 - 130, XP009528899
Attorney, Agent or Firm:
LEE, Joon Sung (KR)
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