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ER6i-我的评测0 n% R5 b; m! A" p8 C
最近拿了个ER6i测了一下~) L9 \: V' P. Z( o0 l9 w
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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.
: I$ E4 K7 U) Y& M5 H1. Isolation against ambient noise
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, {1 u5 B& ~; n: ~- n Left channel Isolation (ER6i)8 Q1 h8 W' b9 G5 F5 {
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: T7 p( [% S0 ERight Channel Isolation (ER6i)
4 v1 H; r; ?" @/ ~4 Z+ M& CDue 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.
1 }, k {. g( ^2 I6 o& b( n p* H+ r) X1 v2. Frequency Response and THD
4 M& W4 Y. Y. R- B9 ~) H3 M4 H6 D* yFormer 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 U7 s& R' E3 i' ?5 t9 E. K
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: ^% w7 {4 S6 a6 E/ z! HFrequency Response and THD: Right Channel (ER6i)8 ~* v9 R% }. }' ^. I0 i* [
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 simulator
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Response of Bass-Rich ear bud (Brand Senmai)
: p7 P5 H) d; I. q& j& \' TCompared 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.% Z0 s3 F( p7 J2 ^
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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