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ER6i-我的评测5 ]5 K7 P( o1 m5 s9 L; \
最近拿了个ER6i测了一下~7 S# ^1 T# i2 ?) @% [- ~$ i0 F* `
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; i0 V+ ]/ F; W4 |- Q& S* o) V& UEtymotic 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.6 I$ g8 C7 C7 o4 q# r8 a" W
1. Isolation against ambient noise# q% s \2 E2 F0 `$ R+ t
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Left channel Isolation (ER6i)
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Right Channel Isolation (ER6i)) `$ i e7 e* G
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.' O$ R4 y: @$ o- ?" v
2. Frequency Response and THD2 l. D' ?' b8 A2 a" Q) j6 B4 O
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)
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Frequency Response and THD: Right Channel (ER6i) L7 c& D$ V0 {* q" a
The frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below.
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/ u. i2 W( e& q. @Response of Type4.3 Ear simulator
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Response of Bass-Rich ear bud (Brand Senmai)' V2 G, @' L4 D" {! c, @; a( W6 @
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. Q' d, `. v# r, s# [3 [& T
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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