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ER6i-我的评测
& Y5 Z& v1 K; Q6 w; t# {3 k6 S( 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.
1 E0 D( {! [& U1. Isolation against ambient noise
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Left channel Isolation (ER6i)
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% U I- V8 _& O' _' Z6 KRight Channel Isolation (ER6i)
8 T$ L& G8 K3 R7 Z9 T6 KDue 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.
! m' G1 p) a A3 q M4 o/ [* S2. Frequency Response and THD
0 T* R( Q( N& v; A" B8 x3 nFormer 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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Frequency Response and THD: Left Channel (ER6i)
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Frequency Response and THD: Right Channel (ER6i)
. e. n3 B+ l3 c' U0 o& JThe frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below. $ g, z6 t6 j( ` l! M
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Response of Type4.3 Ear simulator1 i' B& M& U& q
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3 K0 j: ?5 m/ ?, f: }Response of Bass-Rich ear bud (Brand Senmai)1 j4 p5 k) ~6 t0 i+ Z
Compared 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.
6 @, q4 C- {" r9 AThe huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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