Transmission system comprising at least a satellite station and a connection station, a station including a speech message correction device and a method of improving the quality of speech messages
AssigneeU.S. Philips Corporation
InventorPIERRE ROULLET
Life of this patent
Estimating the term…
Abstract
This system, in which the speech signals are conveyed in frames, is formed by a plurality of satellite stations (M1, M2, . . . ) and a connection station (B1) for permitting data exchanges over telephone lines via a switch (SW). To remedy the unwanted effects of poor transmissions, there is proposed to attenuate the speech signals when the signal frames are declared to be bad frames. Application to GSM and DCS networks.
Claims4
A transmission system comprising at least a satellite station and a connection station for connecting the system to a switched network, in which system at least one of said stations includes means for receiving speech messages transmitted in frames and a speech message correction device for modifying the speech signal frames as a function of the quality of the transmission, which system is characterized in that the speech message correction device includes a counter of bad frames, an attenuation circuit for diminishing the amplitude of the speech signals for a count of said counter that is higher than a predetermined value.
Dependencies are inferred from the claim text.