图示均衡器（用以调节声频大小及音质）an electronic device or computer program that allows you to control the strength and quality of particular sound frequencies separately
un.
1.
图像均衡器
n.
1.
adevice, e.g. onaradioorCDplayer, thatallowsadjustmentstobemadetothestrengthofsoundsofdifferentfrequencies