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楼主 |
发表于 2004-4-1 13:11:07
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和尚,有些话没有必要说出来。这是我两三个星期前写的文章中隐去的部分:Don Wilson的言论。
The ER-4's don't stop working at 16kHz. 16kHz is the reasonable limit on the test format used. We are using an ANSI standard ear simulator for our tests. The acoustic impedance of the coupler drops off dramatically after 16kHz. Even when testing the $10,000+ Orpheus on this system (using the whole manequin)you will have the same problem.
There is no problem below 20 Hz, but there is no reason to advertise them below normal human hearing.
“回放20hz以下的信号毫无问题,但我觉得没有必要为这个做广告,因为人耳已经听不见了”。 |
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