Digital tone generator

Details Digital tone generator Digital tone generator

H - Electricity

04

M

354/103, 379/22

H04M 1/50 (2006.01)

Patent

CA 1180815

DIGITAL TONE GENERATOR Abstract Apparatus for generating eight bit words, each representing an amplitude sample of a tone for use in a telephone system or the like. The digital words are stored in a read only memory with separate sections containing separate tones. The words in a section are read sequentially in predetermined time slots of successive frames to produce a tone of predetermined amplitude, frequency and/or combined frequencies and interruption rate.

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