Title:
テンポ検出装置、テンポ検出方法、プログラム
Document Type and Number:
Japanese Patent JP6963808
Kind Code:
B2
Abstract:
To provide a tempo detector capable of detecting a tempo of a stringed instrument.SOLUTION: A tempo detector comprises: a level acquisition section for acquiring a level per sample of a musical sound signal; a peak hold value calculation section for calculating a peak hold value in a present sample; a buffer section for storing the peak hold value from past one sample to past N samples when N is set to be 1 or more; an attack candidate detection section for detecting the present sample as an attack candidate when a value of a ratio between the peak hold value in the present sample and the peak hold value in the past N samples exceeds a prescribed value of 1 or more; and a BPM calculation section for calculating BPM being the number of beats per minute on the basis of an interval and a sampling frequency of the sample when the interval being a sample difference between the adjacent attack candidates satisfies a prescribed condition.SELECTED DRAWING: Figure 2
Inventors:
Toshida Hiroshi
Yusuke Kamata
Yusuke Kamata
Application Number:
JP2017249915A
Publication Date:
November 10, 2021
Filing Date:
December 26, 2017
Export Citation:
Assignee:
Korg Co., Ltd.
International Classes:
G10G1/00; G10L25/51
Domestic Patent References:
| JP8201542A | ||||
| JP7064544A | ||||
| JP2011133906A |
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Yoshimura Munehiro
Yukio Nakamura
Yoshimura Munehiro