pallee

You may have included your eyes in your test. You may already make a difference in your brain before testing.
   
I did such a stupid test.

My friend bought a ground box. We used the same system to perform two test trials, one with ground box and one without.

I asked my friend to confuse me by not telling me which trial is which.

The result was obvious: no difference.

pallee

回覆 29# uraki

Yes, fuse affects the sound a little bit. It is part of the power (live line). But I suggest not to spend too much on it.

uraki

You may have included your eyes in your test. You may already make a difference in your brain before ...
pallee 發表於 2020-7-30 21:08

唔洗的. 聲音個變化係變刺耳左. 即係好似齒音咁, 有同冇係好大分別的. 淘佬個地盒聲係刺耳加乾. 咁明顯的區別仲做BLIND TEST係咪傻左? 凡係要A/B TEST. (不是BLIND TEST). 要A/B我都不接受係有區別. 你明唔明. 不斷A/B test 找區別. 咁細微的區別我通通無視. = 無分別.

剛好你個地盒, 又或者係你套機係無咩分別. 而我個地盒明顯劣化.
因為我感受過劣化. 包括電源線同地盒的劣化. 我先覺得呢D係有用的.

買一套古河STUDIO電源線回來放係耳放, DAC. 同黑線比較. 係無分別的. 一換左係無感覺.

最後因為感受過劣質電源線的劣化. 所以先買回STUDIO系列比PSI喇叭用. 當黑線咁用...求其
點知呢次換左分別又真係好大.
同之前個經驗又唔同.

如果FUSE. 唔洗好貴. 買條SR BLACK換左佢. 唔好話同原裝FUSE比較, 佢自己放不同方向已經好大分別. 點解釋得到? 首先唔好理高中低音.係成個音場都改晒. 有正常聽力都聽得出, 係聲音位置前後左右的分佈唔同左, 唔到你唔信.
換FUSE方向 等於一條"電線"換個方向渣喎. 仲係要由電廠到器材前面果"1CM電線仔"

pallee

唔洗的. 聲音個變化係變刺耳左. 即係好似齒音咁, 有同冇係好大分別的. 淘佬個地盒聲係刺耳加乾. 咁明顯的區別
If your system is properly grounded, the ground box does nothing. The sound change comes from your eyes and expectation in brain. It is not a problem. Human use brain to listen to sound (ear is just a receiver).
If your system is not grounded, the ground box brings unwanted noise to the audio signal.

你說的不太客觀, 還未清除以往的印象。測試就會變成找認同感了。

測試的重點就是唔知邊個打邊個 (要找個朋友幫忙),最好做3次或以上測試,並帶一定的混亂性。

這樣可以消除腦中的固有印象,也可以防止測試中刻意去找微小的不同和變化。達到客觀和中立。

pallee

回覆 33# uraki

For example, my friend swore that he found big sound change with the ground box before I came. But the change disappeared after our double blind test. May be I helped him to remove the old experience/expectation in brain.

Afterwards, the change didn't come anymore.

pallee

回覆 33# uraki

I am not against you to buy a thing. If you like it or find it good, go for it.

To love something, no reason is required.

uraki

你說的不太客觀, 還未清除以往的印象。測試就會變成找認同感了。

測試的重點就是唔知邊個打邊個 (要找個朋 ...
pallee 發表於 2020-7-30 22:16

我梗係明你個意思啦. 你唔明我個意思... 有時有D野似是而非. 而我不信似是而非的野. 就係咁簡單.
blind test 係比A/B test 更嚴緊的野... 我係話我連A/B TEST可以聽出分別的東西我都唔會信唔會理. 咁又何需用到BLIND TEST??????

簡單D來講我要表達o既係超巨大區別.... 巨量劣化. 係不用TEST都聽到果D. 你明唔明.

uraki

回覆  uraki

I am not against you to buy a thing. If you like it or find it good, go for it.

To lo ...
pallee 發表於 2020-7-30 22:37

而你要表達O既野係你試過一款地盒係一套機無區別. 所以通通無區別??????

而我剛好就中了一個有巨量劣化的例子... 我好肯定話你知係有影響. 而我現在無用任何地盒. 只係開心SHARE.

LOGIC黎講. 有10000個例子證明係無分別. 但只需要有1個例子指出係有分別. 咁前面 10000 個例子都係白費的. 你明唔明?
我講電源線呢個例子. 剛好就係係某一個系統無區別. 而另一個系統有區別.

而我係唔信些微區別, 要反覆去夾硬用力去聽出分別. 就算比你金耳朵BLIND TEST100%中晒. 我都係唔會信.

pallee

回覆 37# uraki

I know what you mean. I like to get a chance to try such a strange product.

Of course I will throw away all my past experience and opinion on ground box before testing. May be I also need a friend to help with a confused blind test.

A good test starts from forgetting everything.

darkfrank

唔駛blind test啦，test乜鬼

音響附件野都係取悅自己既玩具來啫，加左自己聽得開心左咪得囉