Polyphonic guitar pickup for sensing string vibrations in two mutually perpendicular planes
US6392137B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Apr 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H3/182
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A transducer for detecting vibrations in an object. Multiple pickup coils are utilized which are sensitive to both the vibrations in the string plane and the vibrations perpendicular to the string plane. This system subtracts the signals from the first and second pickups to create a signal representing the vibrations in the string plane and combines the signals from the first pickup and the second pickup for determining the string vibrations perpendicular to the string plane. In one embodiment of the invention, the transducer uses one pole of the pickup as a bridge saddle for supporting the guitar string. The saddle pole of the pickup is constructed from a magnetically permeable material. The saddle pole causes the lines of magnetic flux to be carried in large part by the guitar string and allows for a reduction in the total magnetic energy requirement for the pickup's permanent magnet to reduce the cross talk between adjacent string sensors within a polyphonic pickup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.