发明名称 |
DETECTION OF DEFECTIVE SPEECH FRAMES IN A RECEIVER OF A DIGITAL SPEECH COMMUNICATION SYSTEM |
摘要 |
PCT No. PCT/FI95/00510 Sec. 371 Date Mar. 19, 1997 Sec. 102(e) Date Mar. 19, 1997 PCT Filed Sep. 19, 1995 PCT Pub. No. WO96/09704 PCT Pub. Date Mar. 28, 1996A method for detecting defective speech frames in a receiver of a speech communication system includes a coded speech signal consisting of speech frames conveying speech coding parameters received through a transmission link. The detection method for defective speech frames depends on the quality of the transmission link. If the quality of the transmission link is "poor", unusual parameter values of a speech signal in a speech frame are interpreted as transmission errors, and the speech frame is classified as defective. During a transmission link of "good" quality, all received parameter values possible for speech are accepted and forwarded to a speech decoder. In the latter mode of operation, the detection of defective speech frames is solely based on conventional error detection methods employed in the receiver. |
申请公布号 |
WO9609704(A3) |
申请公布日期 |
1996.05.23 |
申请号 |
WO1995FI00510 |
申请日期 |
1995.09.19 |
申请人 |
NOKIA TELECOMMUNICATIONS OY;JAERVINEN, KARI;VAINIO, JANNE |
发明人 |
JAERVINEN, KARI;VAINIO, JANNE |
分类号 |
G10L13/00;G10L19/005;H04B7/26;H04L1/00;H04L1/20;H04Q7/38 |
主分类号 |
G10L13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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