Acoustic sensors optimally placed and coupled to minimize feedback and maximize sound quality of an acoustic-electric stringed instrument
US10431194B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 28, 2018 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Aug 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/525
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Apparatus and associated methods relate to acoustic-electric sensor system including a main acoustic sensor operably coupled to detect string vibrations of an acoustic-electric instrument and a feedback suppression acoustic sensor configured to primarily detect sound board vibrations of the acoustic-electric stringed instrument at a location with a substantially attenuated string vibration signal relative to its sound board vibration signal. In an illustrative example, a mixing circuit may at least partially cancel out sound board vibration signatures output by the main and feedback suppression acoustic sensors with one another to produce a mixed output signal. The feedback suppression acoustic sensor may be spaced outside of an ellipse substantially centered around a sound board string coupling point. The main acoustic sensor may be arranged in close proximity to receive the string vibration signal. The mixed output signal may substantially reject audio feedback disturbances while retaining the unique characteristic sound of the instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.