標準號：BS ISO 389-3-1995
中文標準名稱：聲學.聽力設備校正的標準零點.第3部分:純音和骨傳導振動器用標準等效閾力級別
英文標準名稱：Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold force levels for pure tones and bone vibrators
標準類型：M72
發布日期：1995/3/15 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：M72
國際標準分類號：13.140;17.140.50
適用范圍：Specifies the following data applicable to the calibration of bone vibrators for pure-tone bone-conduction audiometry: reference equivalent threshold force levels (RETFL), corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry; essential characteristics of the bone vibrator and of its method of coupling to a person under test and to the mechanical coupler; essential characteristics and datum level of the masking noise applied to the ear not under test.