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发表于 2004-5-22 12:35:04
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關於 10kHz 的衰減, 早前kanex 出了一篇長文解釋,
剛好Etymotic終於更新網頁, 這下可以證明kanex 的言論是沒有錯漏的:
(若然看不懂英文, 只要對應kanex 的文章就行, 理論是完全一樣的 :D)
http://www.etymotic.com/ephp/er4-ts.asp
The ER-4S earphone has an equalized high frequency response. Most stereo recordings have been equalized, electronically or by choice of microphone type and placement, to sound good with mainstream "good" loudspeakers in typical living rooms. Several studies have been conducted dealing with the subject of loudspeaker response as affected by the listening room. The figure to the right shows the frequency response of loudspeakers considered to be "flat" in five studies. Even a loudspeaker with a perfectly flat power output exhibited a room response 4-10 dB down at 10 kHz, relative to the midband. The ER-4S has been designed with a gradual roll off in the high frequencies similar to that of the curve labeled MCK, which represents a compromise choice. The ER-4S is well suited for all types of stereo recording reproduction. |
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