Percussion transducer
View Patent ↗A ring-shaped percussion transducer for converting a striking impact into a representative electrical pulse triggering signal is suitable for mounting on the center axis of a percussion instrument. In a preferred embodiment, the transducer is formed of a piezo electric material of ring shape; protected on the top and bottom by thinner ring shaped washers; enclosed in a protective coating and mounted along the center axis of a percussion device which when struck transmits vibrations to the percussion transducer. The percussion transducer is connected to conventional downstream electronics so as to produce a sound responsive to the striking impact.
1. A percussion transducer mounted on a cymbal having a striking surface and a center axis, comprising:
a round piezo ceramic element having a first surface and a second surface, and hole in its center so as to form an outside diameter and inside diameter;
a first lead wire attached to the first surface of the piezo ceramic element;
a second lead wire attached to the second surface of the piezo ceramic element;
and means for mounting said percussion transducer on the center axis of the cymbal;
a protective, ring shaped, first washer bonded to the first surface of said piezo ceramic element,
a protective, ring shaped, second washer bonded to the second surface of said piezo ceramic element, and
a protective coating substantially completely surrounding said piezo ceramic element to dampen high-frequency resonances.
2. A percussion transducer as set forth in claim 1 wherein the inside diameter is in a range on the order of 25% to 75% of the outside diameter.
3. A percussion transducer as set forth in claim 1 wherein said adhesive means comprises a silicone RTV adhesive.
4. A percussion transducer as set forth in claim 1 further comprising an electrode comprising a layer of silver material bonded to each of the first and second surfaces of the piezo element.
5. A percussion transducer as set forth in claim 1 wherein the piezo electric material is comprised of lead zirconate titanate (PZT).
6. A percussion transducer as set forth in claim 1 , further comprising an electronic interface, coupled to said first lead wire and said second lead wire, suitable for generating sounds in response to electrical signals created by said piezo ceramic element in response to a user striking the cymbal.
7. A cymbal comprising:
a striking surface and a central axis perpendicular to said striking surface; and a percussion transducer as set forth in claim 1 mounted to said center axis.
8. A cymbal as in claim 7 wherein said percussion transducer is located above or below the central point of the striking surface along the center axis normal to the striking surface.