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±3 dB和-6 dB这两个术语被经常用于描述扬声器系统的频率响应。使用者面对这两个参数出现混淆并错误地认为-6 dB比±3 dB的指标更加严格。文中
The terms ± 3 dB and -6 dB are often used to describe the frequency response of a speaker system. The user confused these two parameters and mistakenly thought that the -6 dB is more stringent than the ± 3 dB. Text