Synthetic-speech calculators

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364710, G10L 100, G06F 316

Patent

active

042118921

ABSTRACT:
A synthetic-speech calculator includes a keyboard consisting of digit keys and function keys and, if desired, or more mode selectors, a desired number of registers for storing numerical information entered by the depression of selected ones of the digit keys, a read-only-memory for storing a large number of digital codes as sound quantizing information, counter means for specifying the address of the memory so as to take a specific digital code out of the memory, a digital-to-analogue converter for converting the specific digital code taken out of the memory into an audible sound signal, and a loud speaker driven by the audible sound signal and producing an audible sound. There are further provided means for producing audible sounds indicative of not only numerical information but also its associated conditional information having a particular meaning with respect to that numerical information, for example, position information, index information, tabulation information, etc. This numerical information and conditional information is derived in different audible forms.

REFERENCES:
patent: 3855461 (1974-12-01), Stockwell
patent: 3878380 (1975-04-01), Tsuiki
patent: 4000565 (1977-01-01), Overby et al.
patent: 4060848 (1977-11-01), Hyatt
Article, "Talking Computers", Infosystems, Jul. 1972, pp. A and B.

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