Telephone summing circuit

Details Telephone summing circuit Telephone summing circuit

1979-01-22

1980-10-28

Morrison, Malcolm A.

Boots, shoes, and leggings

364768, G06F 750

Patent

active

042309085

ABSTRACT:
The addition of two digitized audio signals, each of which has been non-linearly compressed and PCM encoded, is accomplished by converting only one of the signal samples (preferably the smaller) to an exponential-format value which may be linearly added to the other.

REFERENCES:
patent: 3575591 (1971-04-01), Chatelon et al.
patent: 4091452 (1978-05-01), Maggi
patent: 4163871 (1979-08-01), Maggi
A. Assimus et al., "Digital Conference Network, " IBM Tech. Discl. Bull., vol. 17, No. 10, pp. 2967-2969, 1975.

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