Pickup apparatus, having a winding with an adjacent closed circuit, for stringed musical instruments
First Claim
1. Pickup apparatus for a stringed musical instrument, comprising:
- an electrically conductive winding for mounting on the instrument and for connecting into an amplification circuit; and
an electrically conductive closed circuit disposed adjacent said winding but permanently electrically unconnected from said winding, the amplification circuit and the strings of the instrument.
13 Assignments
0 Petitions
Accused Products
Abstract
A pickup apparatus for a stringed musical instrument includes an electromagnetic string vibration sensor, preferably including at least one winding, and a feature associated therewith, preferably a conductive closed circuit around the winding, to suppress resonant peaks and thereby equalize the harmonic reproduction. The apparatus preferably includes two such windings and circuits connected in a hum-canceling manner. A second hum-canceling pair of windings having a lower inductance to reproduce clean highs without phase cancellation can be added along with a resistive-capacitive network so that the combination can reproduce a wide variety of different sounds, all at a consistent high output level.
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Citations
30 Claims
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1. Pickup apparatus for a stringed musical instrument, comprising:
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an electrically conductive winding for mounting on the instrument and for connecting into an amplification circuit; and an electrically conductive closed circuit disposed adjacent said winding but permanently electrically unconnected from said winding, the amplification circuit and the strings of the instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Pickup apparatus for a stringed musical instrument, comprising:
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electromagnetic means, having a nominal inductance, for providing a magnetic field and for enabling electrical current to be conducted with frequency responsive to vibration of at least one string of the instrument in the magnetic field; and closed loop electrically conductive mid-range harmonic suppressing means, coupled to said electromagnetic means, for conducting electrical current in said electrically conductive means so that the inductance of said electromagnetic means is reduced in response to frequency throughout a range of frequencies. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. Pickup apparatus for a stringed musical instrument, comprising:
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first hum-canceling electromagnetic means for responding to string vibrations, including first and second windings connected in series; a first overwinding adjacent said first winding; a second overwinding adjacent said second winding; second hum-canceling electromagnetic means for responding to string vibrations, including third and fourth windings connected in series, said second hum-canceling electromagnetic means connected in series with said first hum-canceling electromagnetic means; and a series resistive-capacitive network connected in series with said second hum-canceling electromagnetic means and in parallel with said first hum-canceling electromagnetic means. - View Dependent Claims (27, 28, 29, 30)
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Specification