Provides a 6dB-per-octave rolloff filter at 115Hz.
提供一个115
时每八度6分贝的低频上移滤波器。
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刊 (Time) Our ears are most sensitive to sound, where most of the information in speech is contained, and that's between about 500 hertz and 2 kilohertz, which is somewhere between the middle and the upper three-quarters of a piano keyboard.
我们的耳朵对声音最敏感的地方是大多数语音信息所在的地方,大约在 500 赫兹到 2 千赫兹之间,这大约是在钢琴键盘的中间到上四分之三之间。