Electronic musical instrument having key transpose function and

Details Electronic musical instrument having key transpose function and Electronic musical instrument having key transpose function and

1990-06-14

1992-01-28

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84657, 84445, G10H 700, G10H 500, H02M 500

Patent

active

050834932

ABSTRACT:
There is provided an electronic musical instrument for transposing the key comprising a key transpose switching means, a key board having multiple keys each assigned with an identification number, a microcomputer for processing the state signals of the switching means and the depressed key signals of the key board to produce key transpose data, a sound generator for producing the key-transposed sound according to the key transpose data produced from the microcomputer, a D/A converter for converting the key-transposed sound into an analog signal, an amplifier for amplifying the analog signal of the D/A converter, and a low pass filter for filtering the amplified sound to deliver it to a speaker.

REFERENCES:
patent: 4176573 (1979-12-01), Deutsch
patent: 4406203 (1983-09-01), Okamoto et al.
patent: 4618851 (1986-10-01), Watanabe
patent: 4724736 (1988-02-01), Isozaki

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