英文關鍵字
indicator
volume
music
led
audio
sound
equipment
dj
level
stereo
control
electronic
meter
light
vumeter
mixer
mixing
analog
closeup
decibel
desk
signal
broadcasting
console
lamp
green
radio
working
speaker
technology
quality
board
digital
clubbing
line
consoling
playing
loud
bulb
measurement
flicker
mix
change
equalizer