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ER6i-我的评测
) t) h: h3 D2 }6 w# W+ j2 p+ d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 @! [7 C# {! R( ~' _1. Isolation against ambient noise6 j ?0 U& Z2 C( E
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Left channel Isolation (ER6i) K* p5 W# l5 O' z n$ ~3 i! c+ v
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) i, d: L- b' u MRight Channel Isolation (ER6i)
& k+ J0 m1 ~/ j+ e, x: f, GDue 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., O( T6 D) T' w0 O8 y8 ~1 I8 y4 A
2. Frequency Response and THD8 a. w+ Y% Q% @1 N8 e( ^
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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Frequency Response and THD: Left Channel (ER6i)2 p! ?/ Q8 K- ?! q' O+ V8 s
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Frequency Response and THD: Right Channel (ER6i)5 m$ C0 f( n& e: G; g% L# t+ Z( c
The frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below. 3 f! K/ d- e+ A0 f2 O# v: c N
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Response of Type4.3 Ear simulator
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Response of Bass-Rich ear bud (Brand Senmai)
( q% n* D5 i7 y7 E2 P* L! bCompared 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.
" y1 A' @( T3 @$ TThe huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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