Adjustable directivity acoustic pickup for musical instruments

摘要

An acoustic pickup transducer device for converting sounds produced by a musical instrument into electrical signals proportional in amplitude and frequency to the instrument sounds includes a housing which has protruding therefrom a suction cup for removably attaching the device to an instrument, and a microphone interconnected through interface circuitry including a volume control potentiometer within the housing to an audio output signal jack. In a preferred embodiment, the microphone is fastened to the outer end of a flexible “gooseneck” stalk which extends from the housing at an angle adjustable by manually bending the stalk to a desired shape, which is retained by a bent wire within the stalk, thus enabling adjustment of the direction of peak sound responsivity or directivity over a wide range of angles. Preferably, the microphone is an electret type supplied with a D.C. bias voltage by a coin-cell battery within the housing.

主权项

1. An acoustic pickup transducer device for use with musical instruments, said pickup device comprising;
a. a housing having an upper wall, a lower wall, and at least one peripheral wall disposed between said upper wall and lower wall, b. a microphone, c. a flexible microphone support stalk fixed at a proximal end thereof to said housing and having a distal end which supports said microphone at adjustable distances from and orientations with respect to said housing, d. electrical interface circuitry within said housing, said electrical interface circuitry having an input port connected to said microphone and an output port, e. an electrical signal output connector connected to an output port of said electrical interface circuitry, and f. a fastener for fastening said housing to a musical instrument.