audio china(pro china) 2011/10/30

 (pro) audio is to point to in addition to the language of music, other than audio, including natural environment, the voice of the noise of the animals, machine tools, and the audio of a voice of action. Audio amplifier and its neighbour about including equipment (including pressure limit device, effect instrument, equalizer, VCD, DVD, etc.), speaker, speakers, speakers) mixer, microphone, display equipment and so on added up to a set of. Among them, the speaker is the audio output devices, horn, subwoofer, etc. A speakers include high, low, three speakers, three kinds of but is not necessarily three.