| 摘要 |
PROBLEM TO BE SOLVED: To provide a measurement device capable of measuring a howling margin objectively and accurately without relying on the auditory of an operator. SOLUTION: A howling margin measurement device 20 compresses and outputs an inputted voice signal at a prescribed ratio if the level of inputted voice signal is at a threshold level or higher. A control means 23 reads the compression level of a compressor 22 while gradually raising the gain of a gain adjusting means 21. Based on whether the read compression level is at least at a prescribed level or higher or not, the control means judges occurrence of howling. A howling margin is calculated based on the gain of the gain adjusting means 21 when the howling is judged to have occurred. COPYRIGHT: (C)2005,JPO&NCIPI |
