# US 11,308,929 B2 · Stringed instrument pickup and feedback system

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- Number: US 11,308,929 B2
- Document ID: US11308929B2
- Status: Granted
- Kind: B2
- Application number: 16/660,150
- Filed: 2019-10-22
- Published: 2020-04-16
- Granted: 2022-04-19
- Earliest claimed: 2018-01-12
- Assignees: Huizhou Double Acoustics Co., Ltd.
- Applicants: Huizhou Double Acoustics Co., Ltd.
- Inventors: Shiqiang Huang
- Web page: https://patentgrep.com/patent/US11308929B2

## CPC

- G10H 3/181: {Details of pick-up assemblies}
- G10H 3/24: incorporating feedback means, e.g. acoustic
- G10D 3/00: Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10H 3/143: {characterised by the use of a piezoelectric or magneto-strictive transducer}
- G10H 3/186: {Means for processing the signal picked up from the strings (filtering G10H1/12)}
- G10H 2210/271: Sympathetic resonance, i.e. adding harmonics simulating sympathetic resonance from other strings
- G10H 2220/461: Transducers, i.e. details, positioning or use of assemblies to detect and convert mechanical vibrations or mechanical strains into an electrical signal, e.g. audio, trigger or control signal
- G10H: ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10D: STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR (organs, harmoniums or similar wind musical instruments with associated blowing apparatus G10B; pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards G10C; automatic musical instruments G10F; electrophonic musical instruments in which tones are generated by electromechanical means G10H)

## Abstract

A stringed instrument pickup and feedback system, comprising a sound pickup device disposed on a string instrument. The sound pickup device comprises a transducer and at least one pickup, a sound processing circuit and a power supply. The pickup activates the transducer to realize resonance enhancement on the instrument body. The transducer is disposed on the string instrument unrestricted by internal bracing. The instrument can be any of pickup, guitar, ukulele, violin, Guqin, Guzheng and Mandolin. The present invention enables the construction of stringed instrument to add vibration and amplify sound of a stringed instrument using the transducer and thus reduce the dependence on rare woods in manufacturing these instruments.

## Claims

### Claim 1

A stringed musical instrument having a stringed instrument pickup and feedback system comprising:
at least one sound pickup member;
an output transducer disposed directly on a surface of a stringed musical instrument; and
a control processor connected to the at least one sound pickup member and the output transducer,
wherein the control processor is configured to receive signals from the at least one sound pickup member corresponding to detected sound from the stringed musical instrument and process said received signals into output control signals,
wherein the control processor is configured to send said output control signals to the output transducer to resonate the output transducer through a predetermined range of frequencies, and
wherein the output transducer resonates the surface of the stringed musical instrument creating simulated rare wood tones that would emanate from a surface of a rare material constructed stringed musical instrument.

### Claim 2 (depends on 1)

The stringed musical instrument of claim 1, wherein the output transducer is disposed directly on a smooth, closed surface of the stringed musical instrument.

### Claim 3

A method of creating rare wood tones from a non-rare wood stringed musical instrument having a stringed instrument pickup and feedback system comprising:
sending signals from at least one sound pickup member corresponding to detected sound from a non-rare wood stringed musical instrument to a control processor,
processing said signals into output control signals,
sending said output control signals from the control processor to an output transducer directly placed on the stringed musical instrument to resonate the output transducer through a predetermined range of frequencies,
resonating the surface of the stringed musical instrument by the output transducer, and
creating, by said resonating surface, rare wood sounding tones that would emanate from a surface of a rare material constructed stringed musical instrument.