H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/29
H04B 7/24 (2006.01) G10L 19/06 (2006.01) H04B 1/66 (2006.01)
Patent
CA 1236169
ABSTRACT Provision is made in the receiver of a radio transceiving system for low hit rate coded speech signals, to be installed on mobiles, for the detection and correction of burst errors present in the demodulated coded signal. Error detection is carried out by distance measurements between the values of the coded parameters in successive intervals, and in the event of an error, values obtained according to linear interpolation techniques are substi- tuted for the erroneous parameters. When only a single interval is affected by burst noise, the erroneous para- meters are replaced by either the mean of the parameters associated with the immediately preceding and following intervals, or by the parameters associated with the pre- ceding interval. If two successive intervals are affected, then the parameters of the first interval are replaced by those of the preceding interval, and those of the second interval by those of the next succeeding interval.
494245
Dal Degan Neviano
Rusina Fulvio
Ridout & Maybee Llp
Telecom Italia Lab Spa
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