14 依據 ANSI(1999)標準,規範測試聽力閾值時,周邊噪音量的限制依頻率所訂定的音量限制,請依
使用不同的轉換器(transducer)測試,允許噪音量的多寡做正確排列順序:
(A) insert earphones > supra-aural earphones > bone conductor
(B) bone conductor > supra-aural earphones > insert earphones
(C) insert earphones > bone conductor > supra-aural earphones
(D) supra-aural earphones > insert earphones > bone conductor
詳解 (共 1 筆)
未解鎖
新精要p104(1000Hz為例)插入4...