Note detection system and methods of using same
US6627806B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jul 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10G7/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A system and methods for assisting a technician in tuning a musical instrument exhibiting inharmonicity, such as a piano. A display informs the technician of one or more beat rates associated with respective intervals of a note being tuned and other notes. A second display informs the technician of the phase difference between the note being adjusted and a reference signal. The note being tuned is detected automatically, thereby allowing the technician to work without constantly touching the system. The wavelengths emanating from the notes are determined accurately, and the corresponding frequencies are tested for their quality before being used in calculations used for providing the information for the displays. A tuning frequency is calculated for each note after measurement of a first note, and the calculation is updated as more measurements are taken. If desired, the technician may visit each note only once in the tuning of the musical instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.