隔音板在扩音器中防止声波相互干扰的隔离装置 A partition that prevents interference between sound waves in a loudspeaker.
扩音器，麦克风，话筒将声波转变成电流的工具，通常接至扩音器，录音机或广播发射机上 An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.
角状扩音器一种用来产生声波的装置，如扬声器 A device for projecting sound waves, as in a loudspeaker.
声波是根据其振幅来测量的。 Sound waves are measured by their amplitude.
