| 摘要 |
PURPOSE: A method and system for automatically controlling the volume in a multilateral communication system are provided to automatically control the energy level of voice signals received from multiple transmitters using gain of the voice signals. CONSTITUTION: A preprocessing unit decodes input signals which include voice signals from one or more transmitters. A received signal level control unit calculates the energy level of the decoded input signals by detecting voice activity of the input signals(S400). The received signal level control unit creates gain of the input signals using the calculated energy level and a receiver signal level selected by the receiver(S420). The received signal level control unit controls the volume level of the input signal using the gain of the created input signal(S430). [Reference numerals] (AA) Start; (BB) Difference level>difference level threshold value?; (CC) No; (DD) Yes; (EE) End; (S400) The energy level of current voice signal is calculated using VAD; (S410) A difference level threshold value is compared between the energy level of a current voice signal and a receiver signal level; (S420) A gain is created using the energy level of a current voice signal and a receiver signal level; (S430) The energy level of a current voice signal is controlled using a gain |
