Pickup device for stringed musical instrument
AssigneeNippon Gakki Seizo Kabushiki Kaisha
InventorMasahiro Ikuma
Life of this patent
Estimating the term…
Abstract
A pickup device for an acoustic guitar having metallic strings comprises an electromagnetic pickup detachably attached in a sound hole of the guitar and a piezoelectric pickup detachably attached in the sound hole or to another part of a sound board of the guitar. Outputs of the two kinds of pickups are mixed at a selectable ratio thereby to compensate for difference in the picking-up characteristics of the respective pickups.
Claims7
A pickup device in a stringed musical instrument having vibratory strings of magnetic material and a sound body carrying said strings and for transducing mechanical vibrations of said strings into electrical signals, said pickup device comprising:
- a pickup mount member detachably attached to said sound body;
- an electromagnetic pickup unit attached to said pickup mount member, said pickup mount member being attached to said sound body at a position whereby said electromagnetic pickup opposes said strings for electromagnetically transducing the vibrations of said strings into electrical signals;
- a piezoelectric pickup unit detachably attached to said sound body at a position to receive the vibrations of said strings for piezoelectrically transducing said received vibrations of the strings into electrical signals;
- and
- mixing amplifier means attached to said pickup mount member and electrically connected to said electromagnetic pickup unit and said piezoelectric pickup unit for mixing at a selectable ratio said electrical signals from both the electromagnetic and piezoelectric pickup units, thereby providing a mixed electrical output corresponding to the mechanical vibrations of said strings, said mixing amplifier means including a single adjustment means for continuously varying the relative amplitudes of the electrical signals from said electromagnetic pickup and said piezoelectric pickup in opposite directions simultaneously.
A pickup device in an acoustic guitar having magnetic material strings to transduce mechanical vibrations of said strings into electrical signals, said pickup device comprising:
- a pickup mount member detachably attached to a sound board of said guitar across a sound hole in the sound board;
- an electromagnetic pickup unit fixed to said mount member at a position to oppose said strings when the mount member is attached to the sound board for electromagnetically transducing the vibrations of said strings into first electrical signals;
- a piezoelectric pickup unit detachably attached to said sound board at a position to receive the vibrations of said strings for piezoelectrically transducing said received vibrations into second electrical signals;
- mixing amplifier means fixed to said mount member and connected to said electromagnetic pickup unit and said piezoelectric pickup unit for mixing and varying at a continuously selectable ratio the amplitudes of said first and second electrical signals;
- flexible connecting means for electrically and mechanically connecting said piezoelectric pickup unit to said mixing amplifier means and having a certain length for permitting a certain freedom of the position where the piezoelectric pickup unit is attached;
- and
- means connected to said mixing amplifier means for outputting the mixed first and second electrical signals.
Dependencies are inferred from the claim text.