Pitch identification device

Details Pitch identification device Pitch identification device

1981-08-28

1983-08-23

Perkey, William B.

Music

Accessories

Tuning devices

84477R, 84DIG18, 73648, G10G 700, G01H 1300

Patent

active

043997325

ABSTRACT:
A transducer receives notes from a musical instrument and converts them into electrical signals. The signals are passed to filter banks containing filters having passbands in different octave ranges. The filtered signals in each bank are added and translated in frequency to the frequency range of the highest octave of interest. The translated signals are then passed through a plurality of filters each of which is tuned to pass directly the frequency of one pitch in that octave. Indicators are attached to the pitch filters to indicate the presence of a signal passing therethrough. Also, additional indicators may be attached to the octave filters to indicate the octave from which the signal originated.

REFERENCES:
patent: 2207450 (1940-07-01), Bergan et al.
patent: 2514490 (1950-07-01), Hanert
patent: 2958250 (1955-03-01), Poehler
patent: 3894186 (1975-07-01), Humphrey et al.
patent: 4024789 (1977-05-01), Humphrey et al.
patent: 4041783 (1977-08-01), Shimauchi et al.
patent: 4122751 (1978-10-01), Calvin
patent: 4313361 (1982-02-01), Deutsch
patent: 4354418 (1982-10-01), Moravec

Affiliated with

Also associated with

Rating

Pitch identification device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pitch identification device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pitch identification device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1943783