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ER6i-我的评测
8 p" O: K, [( ~4 l( x最近拿了个ER6i测了一下~
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N; O( W9 O; `* XEtymotic 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.: x# w& ]- A" v
1. Isolation against ambient noise5 l" ~5 v( N* ^7 |; C
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Left channel Isolation (ER6i)
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" r* p! S' u! k+ x/ k: lRight Channel Isolation (ER6i)
+ z0 ~6 j3 y- d. K; g4 l+ b$ A" ~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.
) }9 O7 c( H! a9 H& }0 E2. Frequency Response and THD
: H, b- ~) [2 p6 U3 fFormer 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.# q( w" k0 h0 B1 _/ K* J2 ^% {
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Frequency Response and THD: Left Channel (ER6i)$ [2 C- U# r7 P. v4 g
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Frequency Response and THD: Right Channel (ER6i)
3 y+ G* ], U& sThe 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)
( M. A R- k0 \2 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., r: b8 M$ ]; b: g$ j
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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