Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Patent
1998-04-30
2000-09-26
Nguyen, Lee
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
455 63, 455501, 714 48, H04B 1700
Patent
active
061252654
ABSTRACT:
Voice decoding means 9 includes: voice decoding operation means 10 for performing a decoding operation on encoded voice data of a voice frame from the channel decoding means 6, thereby outputting an analog voice signal and voice power information of the voice frame; voice power operation means 14 for accumulating and averaging the voice power information, and outputting comparative power information; comparing means 16 for comparing voice power information of a received voice frame with the comparative power information, and for, when the difference is not smaller than a threshold, outputting a voice output control signal; and voice output control means 12 for controlling a volume of a voice frame having voice power information in which an abnormality is detected based on the voice output control signal. The voice decoding means 9 detects an erroneous voice frame on the basis of a difference between voice power information. The volume is controlled, so that the generation of an abnormal tone is prevented from occurring.
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Tsugane Hideshi
Yamamoto Naoyuki
Jama Isaak R.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Lee
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