Direct the DSAS's microphone towards the sourceofsound.
指令员的麦克风对源头的声音。
2
The phase mismatch error is the main error sourceofsound intensity measurement system. It is difficult to eliminate this error only by upgrading the accuracy of instrument.
相位失配误差是声强测量系统的主要误差源,仅靠提高仪器的精度很难消除这一误差。
3
Asynchronous sound effects, on the other hand, are not matched with a visible sourceof the sound on screen.