英文關鍵字
music
vu
meter
volume
db
level
analog
indicator
arrow
sound
audio
control
electronic
studio
equipment
stereo
needle
vintage
dial
amplifier
scale
technology
peak
amplify
display
black
measuring
amp
listening
amplitude
broadcasting
panel
old
background
measure
signal
80s
sync
noise
media
tape
engineering
horizontal
isolated
record