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ER6i-我的评测, Q: E$ U4 }* }' v
最近拿了个ER6i测了一下~+ a: @* x0 w2 @8 O% H( p
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( e2 @; B: w4 aEtymotic ER6i is a in-the-ear type stereo headset. It provides a isolation of over 25dB against the noise outside. Below is the measurement done this morning in AE lab, CDC.
: t& a8 L; v' O4 j1. Isolation against ambient noise
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Left channel Isolation (ER6i)( f7 H$ h! a- ]
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Right Channel Isolation (ER6i)
3 W% ^7 g( c* ^; _Due to the in-the-ear design, ER6i provides much better noise canceling compared with normal circumaural earphones and normal earbuds. In the frequency below 1 KHz, the isolation is around 18dB and more than 25dB over 1 KHz, as shown in the pictures above.) {" w; d; @7 \: L7 _
2. Frequency Response and THD; t1 m" l- m/ L7 c7 N- w, r; P* H
Former try listening gives a feeling that the ER6i lacks in bass and it is proved by its response. Pictures below reveal why it’s bass-free.' r$ X- H# q& e+ z" n
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Frequency Response and THD: Left Channel (ER6i)& @0 ~- h" ~& W9 o; k5 i
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Frequency Response and THD: Right Channel (ER6i): N0 U1 j6 F/ S2 V
The frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below. : A7 K4 D9 U' Z% G" f
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Response of Type4.3 Ear simulator' u* j) E4 ^: P+ c( c
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Response of Bass-Rich ear bud (Brand Senmai)
0 a2 g/ v' w4 G* z5 ]9 w6 ACompared with the response given above, the ER6i’s response below 1 KHz is quite flat, within ±2dB. Instead, the Bass-Rich ear bud has a peak around 500Hz, which will result in plenty of bass elements while listening music. And that’s why ER6i is designed to classic music without too much bass." e9 p" d% K7 M0 y
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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