Angled pickup for digital guitar
First Claim
1. A reluctance pickup for a stringed musical instrument comprising:
- a first blade-shaped pole piece disposed within a first wire coil and including a first elongated pole end extending from said first coil, the first pole piece having a first magnetic polarity, the first elongated pole end having two opposing elongated sides; and
a second blade-shaped pole piece disposed in a spaced relation with the first pole piece, the second pole piece further disposed within a second wire coil and including a second elongated pole end extending from said second coil, the second pole piece having a second polarity, the second elongated pole end having two opposing elongated sides, the opposing elongated sides of the first and second pole ends being approximately co-planar and parallel, wherein, with the pickup mounted between a selected magnetically permeable string of a stringed instrument and a surface of the instrument over which the selected string spans, the pickup is disposed such that a projection of the string generally normal to the surface of the instrument intersects at least one of the elongated sides of the first or second pole ends at a selected orientation angle between approximately 28 degrees and approximately 58 degrees.
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Accused Products
Abstract
A reluctance pickup for a guitar including a pair of magnetic pole pieces disposed within wire coils. The coils are oppositely wound and wired in series. Each pole piece has an elongated magnetic pole end extending above its respective coil. The pole pieces are disposed so as to form a pickup face having two approximately parallel elongated pole ends. The elongated pole ends have opposite magnetic polarities and create a magnetic field therebetween. The pickup is mounted beneath a magnetically permeable string such that a projection of the string intersects the pole ends at a selected orientation angle between approximately 28 degrees and approximately 58 degrees, preferably, 43 degrees, so as to optimize selected performance parameters of the pickup, including: channel-to-channel separation, frequency response, and dynamic response.
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Citations
23 Claims
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1. A reluctance pickup for a stringed musical instrument comprising:
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a first blade-shaped pole piece disposed within a first wire coil and including a first elongated pole end extending from said first coil, the first pole piece having a first magnetic polarity, the first elongated pole end having two opposing elongated sides; and
a second blade-shaped pole piece disposed in a spaced relation with the first pole piece, the second pole piece further disposed within a second wire coil and including a second elongated pole end extending from said second coil, the second pole piece having a second polarity, the second elongated pole end having two opposing elongated sides, the opposing elongated sides of the first and second pole ends being approximately co-planar and parallel, wherein, with the pickup mounted between a selected magnetically permeable string of a stringed instrument and a surface of the instrument over which the selected string spans, the pickup is disposed such that a projection of the string generally normal to the surface of the instrument intersects at least one of the elongated sides of the first or second pole ends at a selected orientation angle between approximately 28 degrees and approximately 58 degrees. - View Dependent Claims (2, 3)
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4. An electromagnetic transducer assembly for a stringed musical instrument having a plurality of magnetically permeable strings extending in a generally parallel spaced relation to each other across a span above a surface of the instrument so as to generally define a string plane, the transducer assembly being adapted to be mounted adjacent a selected string in spaced relation thereto, the selected string defining a reference vertical plane generally normal to the string plane, the transducer assembly comprising:
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a magnet assembly defining a magnetic field and including a first pole end with a first magnetic polarity and a second pole end with a second opposite polarity, the first and second pole ends having, respectively, a first and a second elongated pole end surface, the elongated portions thereof generally defining a first and second pole end axis, respectively, wherein, the first pole end is disposed in spaced relation to the second pole end such that;
(a) the first and second elongated pole end surfaces, together with the space therebetween, comprise an transducer upper surface with the pole ends extending downward from the transducer upper surface;
(b) the first pole end axis is generally parallel to the second pole end axis; and
(c) a transducer vertical plane is defined between the first and second pole ends, the transducer vertical plane being generally normal to the transducer upper surface and generally parallel to the first and second pole end axes; and
an electrical coil assembly disposed adjacent the magnet assembly and positioned for sensing changes in the magnetic field induced by movement of the selected string, wherein, with the transducer assembly mounted beneath the selected string, the transducer vertical plane intersects the reference vertical plane at a selected orientation angle. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A polyphonic pickup assembly for a stringed musical instrument having a plurality of magnetically permeable strings extending in a generally parallel and evenly spaced relation to each other across a span above a surface of the instrument so as to generally define a horizontal string plane, the plurality of strings each defining a separate vertical string plane, each vertical string plane being generally normal to the horizontal string plane, the polyphonic pickup assembly comprising:
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a plurality of the transducer assemblies, each transducer assembly being adapted to be mounted adjacent a selected string in spaced relation thereto, each transducer assembly comprising;
a first and a second pole piece defining a magnetic field, the first pole piece comprising a first pole end with a first magnetic polarity, the first pole end extending through a first coil, the second pole piece comprising a second pole end with a second opposite polarity, the second pole end extending through a second coil, the first and second coils being oppositely wound and each positioned for sensing changes in the magnetic field induced by movement of a magnetically permeable string, wherein each first and second coil converts sensed changes in the magnetic field to corresponding first and second electrical signals, the first and second pole ends having, respectively, a first and a second elongated pole end surface, the elongated portions thereof generally defining first and second pole end axes, respectively, wherein, the first pole end is disposed in spaced relation to the second pole end such that;
(a) the first and second elongated pole end surfaces, together with the space therebetween, comprise an transducer upper surface with the pole ends extending downward from the transducer upper surface;
(b) the first pole end axis is generally parallel to the second pole end axis; and
(c) a transducer vertical plane is defined between the first and second pole ends, the transducer vertical plane being generally normal to the transducer upper surface and generally parallel to the first and second pole end axes; and
a circuit connecting each of the plurality of transducer assemblies, wherein, with each transducer assembly mounted beneath one selected string, the vertical string plane corresponding to such selected string is generally normal to and approximately bisects such transducer upper surface, and such transducer vertical plane intersects such vertical string plane at a selected orientation angle between approximately 28 degrees and approximately 58 degrees. - View Dependent Claims (20, 21, 22)
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23. A reluctance pickup for a stringed musical instrument comprising:
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an pole piece disposed adjacent a wire coil, the pole piece comprising an elongated pole end having a magnetic polarity, the elongated pole end having two opposing elongated sides, wherein, with the pickup mounted between a selected magnetically permeable string of a stringed instrument and a surface of the instrument over which the selected string spans, the pickup is disposed such that a projection of the string generally normal to the surface of the instrument intersects an elongated sides of the pole end at an orientation angle selected so as to optimize at least one measurable performance parameter of the transducer assembly during play of the stringed instrument.
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Specification