Beat detector and synchronization control device using the beat

Details Beat detector and synchronization control device using the beat Beat detector and synchronization control device using the beat

1992-04-17

1993-10-26

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84612, 84645, G10H 700

Patent

active

052568326

ABSTRACT:
A reference start point RPS and a reference end point RPE for detecting a beat position BP.sub.n are set as a BP.sub.n-1 +BT.+-.DR on the basis of a beat interval BT obtained by user's guide tapping for a predetermined time, a predetermined deviation value DR and the detected last beat position BP.sub.n-1. Thus, the crest value Lrp of an audio signal exceeding a predetermined threshold TH in the specified retrieval interval is obtained. Each beat position BP.sub.n is obtained on the basis of a reference point RS of the audio signal existing when the crest value is obtained. In reproduction of an audio signal by a DMTR, a MIDI clock is generated from the beat position and output to a MIDI sequencer, etc.

REFERENCES:
patent: 4566362 (1986-01-01), Kikumoto
patent: 4594930 (1986-06-01), Murakami
patent: 4694724 (1987-07-01), Kikumoto et al.
patent: 5054360 (1991-10-01), Lisle et al.
patent: 5062097 (1991-10-01), Kumaoka

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