Apparatus for detecting the number of beats
US5614687A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 15, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/086
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.