Photoelectric control transposer for electric guitar

Abstract

The invention relates to a photoelectric control electric guitar pitch shifter which comprises an AF (audio frequency) pitch shifter circuit and an AF pitch shifter control circuit. The pitch shifter is characterized in that: the AF pitch shifter control circuit comprises a control coding circuit and a photo-electric sensing control module connected with the control coding circuit. The photo-electric sensing control module comprises an infrared-emitting diode, an infrared-receiving diode in corresponding arrangement as well as a sensing block provided with a narrow and long sensing groove which is provided with the infrared-emitting diode and the infrared-receiving diode at two sides correspondingly. The pitch shifter of the invention has the beneficial effects that: 1. people who play the electric guitar can control and change the pitch of the electric guitar conveniently only by moving fingers on the sensing groove in the non-contact photo-electric sensing control module, thereby enhancing the playing effect of the electric guitar further; 2. the pitch shifter can be directly inserted in the output end of the electric guitar to fulfill the function of pitch shifting without changing the structure of the electric guitar; the operation is simple and the application is convenient.

Description

[0001] Technology area [0002] The invention relates to a photoelectric control electric guitar tuner, the device can adjust the pitch of the electric guitar tuner through the non-contact induction control of fingers, so as to change the pitch of the output audio of the electric guitar. Background technique [0003] The electric guitar is currently a widely used electro-acoustic musical instrument, and its output audio signal needs to be played back through a dedicated speaker for the electric guitar. The electric guitar contains an audio signal output circuit. An electric guitar with a pitch-shifting function needs to be equipped with an audio pitch converter, which is connected between the output port of the audio signal of the electric guitar and the input port of the subsequent sound playback equipment such as a dedicated speaker for the electric guitar. A variety of different tones can be played on the electric guitar, which improves the performance function of the elect...

AI Technical Summary

Problems solved by technology

However, most of the existing electric guitar audio frequency converters want to adjust and change the high and low pitch of the output audio by changing the mechanical switch. This adjustment method makes the player want to change the electric guitar output freely and accurately during the performance. The tone is very difficult, which not only brings inconvenience to the actual use of the electric guitar, but also affects the playing effect of the electric guitar to a certain extent.

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