英文關鍵字
acoustic
amplifier
audio
audiophile
background
backgrounds
bass
boombox
close
closeup
decibels
electronics
equipment
fidelity
frequency
listen
loud
loudness
loudspeaker
means
melody
multimedia
music
musical
noise
playing
power
sound
speaker
speakers
stereo
sub
subwoofer
surround
system
that
tweeter
vibrating
vibration
vibrations
woofer