標(biāo)準(zhǔn)號(hào)：BS ISO 389-3-1995
中文標(biāo)準(zhǔn)名稱：聲學(xué).聽力設(shè)備校正的標(biāo)準(zhǔn)零點(diǎn).第3部分:純音和骨傳導(dǎo)振動(dòng)器用標(biāo)準(zhǔn)等效閾力級(jí)別
英文標(biāo)準(zhǔn)名稱：Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold force levels for pure tones and bone vibrators
標(biāo)準(zhǔn)類型：M72
發(fā)布日期：1995/3/15 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：M72
國(guó)際標(biāo)準(zhǔn)分類號(hào)：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.