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ER6i-我的评测
6 [# H# r4 B5 ?" C b: L+ |最近拿了个ER6i测了一下~
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Etymotic 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.0 n; m2 O- S8 q: C
1. Isolation against ambient noise
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Left channel Isolation (ER6i)
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Right Channel Isolation (ER6i)" `7 n9 ~2 g- u, r" k
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.
7 v' ^% O; n. i: ^: k8 `2 j! o4 @2. Frequency Response and THD! ]8 b, d/ o6 K( F% P- @8 u! g
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." V/ [+ q b+ X3 r; d4 W0 ]
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2 N9 c" @! V& T& W; k- KFrequency Response and THD: Left Channel (ER6i)$ p) S: x8 s! H/ g4 m
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Frequency Response and THD: Right Channel (ER6i)
5 g$ X. i# P( h+ o' c/ N1 _The frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below.
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Response of Type4.3 Ear simulator5 b1 o( x& M3 N9 {6 m
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/ L4 f }4 x6 ]2 j4 E c5 S6 @. lResponse of Bass-Rich ear bud (Brand Senmai)
. u8 W) [1 G- B4 x4 FCompared 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.. _" t5 O% [/ Z/ F4 A' D
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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