G - Physics – 10 – H
Patent
G - Physics
10
H
G10H 7/00 (2006.01) G10H 1/18 (2006.01) G10H 1/32 (2006.01)
Patent
CA 2717332
This is the classical guitar MIDI interface with system for note positive identification through two points coordinates system with priority system determination made through use of conductive plastic polymer strings, metal contacts and piezoelectric sensors on the frets, nut and bridge of guitar. On the surface of the modified classical guitar frets are placed metal contact-sensors, on top of the piezoelectric pickups. The metal film contacts are wired and led to the buffer and than to microcontroller which scans buffer outputs with high frequency range of several MHz The metal film contact switches are placed on the fret exactly on the projected vertical line underneath the string. In between of these contacts are placed combined sound and electric insulators made of materials which isolate electrically two adjacent metal fim contacts and are in the same time sound (vibration )absorbents. They have enough width to allow string slight lateral movement when pressed without loosing contact. These contacts are constantly scaned by the microprocessor with high frequency rate of several MHz or more and in inactive state they are logic LOW while in active they are logic HIGH. Signals from metal sensors would be buffered before being delivered to microprocessor. Microprocessor will be programmed to have priority designation for each fret starting with the highest 19th fret as the priority 1, 18th priority 2 and so on to the last priority which is sensor on the nut at the end of neck , according the position of fret's contacts and pickups, to give priority flags to each so that are eliminated all which are bellow pressed position on guitar's neck, which simply is the way guitar sound is produced assuring positive tone recognition. They are the first of the note identification sensors.
Bilandzic Zeljko
Na
LandOfFree
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