Quote" 沒錯，這種喇叭擺位產生了最敏感的音響系統，從此牽一髮而動全身，的確是在心理學上極度客觀的鑑識標準了.... 理論上，我們可以從中辨認出：聽到的聲音，究竟是器材本身的問題？還是空間（或調音道具）的問題？"

On the other hand, how can you be sure that you are not experiencing a placebo effect? How do you prevent the prior knowledge (visual, verbal, etc) from influencing what you perceived? This is what had bothered me for the longest time......