| 摘要 |
Disclosed is a voice encryption error detection method, comprising: according to the value of a detected parameter of a silent frame in an acquired voice data stream and the code rate of the previous voice frame adjacent to the silent frame, judging whether the value of the detected parameter of the silent frame is legitimate; by setting a threshold in a detection window, judging whether the cumulative quantity of illegitimate values of the detected parameter of the silent frame exceeds the set threshold; and when the cumulative quantity of illegitimate values exceeds the set threshold, determining there is a voice encryption error. Also provided is a voice encryption error detection apparatus. The present invention achieves detection of a hissing sound attributable to a voice encryption error by determining there is a voice encryption error, and remedies the shortcoming in the art that the detection of hissing cannot be achieved by relying on methods for detecting certain parameters of a voice frame when most of the voice data are silent frames. The present invention thereby improves the system of methods for detection of hissing and further broadens the application range for the detection of hissing. |
