Arlinger S D, Jerlvall L B
Scand Audiol. 1987;16(1):21-7. doi: 10.3109/01050398709042151.
Test-retest reliability of sound field audiometry has been evaluated by means of repeated determinations of hearing threshold levels for frequency-modulated tones on normal-hearing and hearing-impaired subjects. Two modulation frequencies, 5 and 20 Hz, and two frequency deviations, 4 and 25%, were used, with centre frequencies in the range from 250 to 8,000 Hz. No significant influence on the standard deviations for test-retest differences was found for any of the three parameters studied: modulation frequency, frequency deviation, and normal versus impaired hearing in the listeners. The standard deviation values obtained were smaller than those previously obtained for regular pure-tone threshold audiometry using headphones. They indicate a test-retest reliability allowing functional gain measurements of hearing aids on the real ear to be performed at least as accurately as insertion gain measurements at frequencies above 2 kHz. In the hearing-impaired listeners, some influence was found from modulation frequency and frequency deviation on the sound field hearing threshold levels obtained.
通过对听力正常和听力受损受试者的调频音听力阈值水平进行重复测定，评估了声场测听的重测信度。使用了两种调制频率，即5 Hz和20 Hz，以及两种频率偏差，即4%和25%，中心频率范围为250至8000 Hz。在所研究的三个参数中，即调制频率、频率偏差以及受试者听力正常与受损情况，均未发现对重测差异的标准差有显著影响。所获得的标准差数值小于先前使用耳机进行常规纯音阈值测听所获得的数值。这些数值表明重测信度使得在真耳上对助听器的功能增益测量至少能够像在2 kHz以上频率进行插入增益测量一样准确。在听力受损的受试者中，发现调制频率和频率偏差对所获得的声场听力阈值水平有一定影响。
