Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1989-09-19
1991-10-22
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 51, G10L 500
Patent
active
050602675
ABSTRACT:
A method and a device for producing an imitative animal's voice to embellish a music. The animals voice is analyzed and approximated into a waveform represented exclusively by HIGH/LOW, and the time data X of each group of consecutive intervals of the same state are stored in a first ROM. The data X are stored in the consecutive addresses of a first read only memory ROM. When the ROM receives a pulse from a first address counter, the datum X stored in the mth address of the ROM will be sent to a first divider means if the address count of the first address counter is m. To further melodize the imitative animal's voice, the clocks from a first clock generator are compressed or expanded. The data Y, Z of the notes of the desired melody are stored in the consecutive addresses of a second ROM to respectively control the average (or apparent) pitch of the produced imitative voice and the duration of the voice at a given pitch. The device to melodize the imitative voice further comprises a second clock generator, of which the period t.sub.u " is equal to the length of the shortest note of the melody.
REFERENCES:
patent: 4070550 (1978-01-01), Miller
patent: 4613985 (1986-09-01), Hashimoto
patent: 4623970 (1986-11-01), Toyomura
patent: 4624012 (1986-11-01), Lin et al.
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