ER6i-我的评测& S1 O( g/ s; x" u: t4 u6 j 最近拿了个ER6i测了一下~+ r1 G( g/ u6 a" X# M ; o' a2 x; ]; P+ J& f8 X ! A& {2 R$ J: N9 M/ v" zEtymotic 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 L( a4 K% L( o. P% {: u1. Isolation against ambient noise! e2 j6 m& \' j+ F7 c : t* H. y; N# o2 ]/ [ Left channel Isolation (ER6i) & Q+ A0 O4 r9 w2 ^5 S - G' F! L8 O9 r& u1 S; {Right Channel Isolation (ER6i) / Z) w! ^$ E! T" H8 f3 E1 xDue 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.% ]. l4 ^ I) H8 l5 E$ i" R5 i
2. Frequency Response and THD - Q: y2 G) E9 N& n! p; {$ bFormer 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. & v: E& D* G- ?$ j! V3 f& p% U! ?- Z C6 v4 j) A8 S4 K7 R
Frequency Response and THD: Left Channel (ER6i) 1 K1 s4 |$ s5 b7 T' o 4 @8 W: q k: e/ r% NFrequency Response and THD: Right Channel (ER6i) / N% t" l9 ]3 \- rThe frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below. I5 y/ S6 Q7 s( v p8 J% x ( O8 j2 r; E j* Q+ E6 FResponse of Type4.3 Ear simulator) j. ]; G/ n% p) f 8 b3 Q8 x/ ^& G) u( s) @! B
Response of Bass-Rich ear bud (Brand Senmai) 6 c' ^# h: `. a! Z. JCompared 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.3 \+ o7 C/ d! ]- q! G
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic.
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发表于 2006-9-8 23:11
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