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ER6i-我的评测
9 X4 M: Z! w4 C7 r( ]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.( v2 b) ~' h1 [% |. E9 h
1. Isolation against ambient noise
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) g0 q- T0 ~) ~% T4 Z7 f! F# y7 b Left channel Isolation (ER6i)4 ^4 L& a+ I# M5 z2 A5 p( c( H
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Right Channel Isolation (ER6i)
0 A5 h/ N K, S/ @4 v& u9 X3 y0 p- bDue 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.9 h" y: \/ S; [. }/ E8 s3 l3 V* i9 h1 g
2. Frequency Response and THD. r7 J8 e7 `: e5 M! j/ ~
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.
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2 X$ n; S2 `" V* E( XFrequency Response and THD: Left Channel (ER6i)% ]2 S5 F, ]. m: z+ n- v. D6 {
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* C) {. h( ^/ u$ f; LFrequency Response and THD: Right Channel (ER6i); g* K! Z# ~( H1 _* l2 E- a- G5 n& y
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 simulator2 d9 M4 I, A. J
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Response of Bass-Rich ear bud (Brand Senmai)
; L/ k* t$ j2 K2 K- J$ uCompared 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.
, o! S5 m g; g( E/ YThe huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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