Patent ID: 7259318

Claim:
A magnetic pickup device for a stringed musical instrument with large free shape low impedance coil for noise cancellation comprising of: a stringed musical instrument having strings made from magnetic permeable material, wherein said strings are magnetized to produce an alternating magnetic field caused by vibrations of said strings; at least one single coil style magnetic pickup containing a signal picking coil. wherein said signal picking coil is responsive to said alternating magnetic field to produce a signal picking coil string electrical signal, and wherein said signal picking coil is exposed to a surrounding space electromagnetic noise to produce a signal picking coil noise electrical signal; at least one large noise picking coil mounted within a body of said stringed musical instrument, wherein said large noise picking coil is exposed to the surrounding space electromagnetic noise to produce a large noise picking coil noise electrical signal, and wherein said large noise picking coil is not responsive to the alternating magnetic field at any noticeable level; at least one shield electrically connected to a around terminal of said stringed musical instrument to cover and protect said large noise picking coil from a high frequency electromagnetic noise; and a circuit network containing resistors and capacitors, wherein said circuit network is connected in electrical parallel to said large noise picking coil for fine tuning of the large noise picking coil noise electrical signal.