ultrasonic
involving or relating to sound waves with frequencies higher than the upper limit of human hearing
超音波の
[形容詞]
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relating to a sound system that uses two or more channels to create a sense of space and depth in audio playback
ステレオ
[形容詞]
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(of sound) extremely high-pitched or intense that seems to cut through other sounds
鋭い
[形容詞]
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having a loud and chaotic sound, often associated with uproar or disorder
騒々しい
[形容詞]
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