Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent
1986-02-25
1989-03-07
Brown, Thomas W.
Telephonic communications
Audio message storage, retrieval, or synthesis
Multilingual system or operation
370 61, 375 25, H04B 1404, H04J 304, H04M 350
Patent
active
048113840
ABSTRACT:
Voice information are converted into pulse code modulated data sequences which, after a further processing, can likewise be deposited in a memory for a specific subscriber. This subscriber can then fetch the information from the memory at any desired time. Given an attenuation of the analog voice signals on the transmission path, a regulation is undertaken in such a manner, given a downward transgression of a mean voice level, that the digital pulse code modulated data sequence is correspondingly modified in its values thus represented, being modified on the basis of a gain factor which can be read from a table. The drive information for the stored table are supplied by a peak value memory which is, in turn, charged with the output signals of an averaging filter. This method therefore provides that the influence of an attenuation of the analog voice signals existing on the transmission path is significantly limited.
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Brown Thomas W.
Siemens Aktiengesellschaft
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