I think my hummer doesn't sound so "pure" anymore. There seems to be a side noise. Is there a way to check it? Idon't want to apply weird frequencies. Thank you!
我覺得我的悍馬聽起來不再那麼“純粹”了。旁邊好像有雜音。有沒有辦法檢查它？我不想應用奇怪的頻率。謝謝！
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