Apparatus for detecting the number of beats

Details Apparatus for detecting the number of beats Apparatus for detecting the number of beats

1995-12-15

1997-03-25

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84648, G10H 700

Patent

active

056146876

ABSTRACT:
An apparatus for detecting the number of beats in that second time measuring means starts to measure time from a time point when the level of a predetermined frequency component of an input audio signal is once higher than a predetermined level and, after a predetermined period T1 elapses from the time point, the measurement of time by the second time measuring means is terminated at a time point when the level of the predetermined frequency component of the input audio signal is again higher than the predetermined level, thereby to convert a measured period T2 at termination of measuring of the second time measuring means into BPM i.e., the number of beats per predetermined unit time regarding as a unit beat.

REFERENCES:
patent: 4595930 (1986-06-01), Murakami
patent: 4655113 (1987-04-01), Bunger et al.
patent: 5256832 (1993-10-01), Miyake
patent: 5478967 (1995-12-01), Saito et al.

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