Meissner W A, Lankford J E
George A. Zeller Mental Health Center, Peoria, Ill. 61614.
Arch Otolaryngol. 1976 Dec;102(12):735-6. doi: 10.1001/archotol.1976.00780170053007.
Several methods have been proposed for calibrating the bone-conduction section of an audiometer. Because of its low cost and ease of implementation, the input-voltage method is attractive. Only one previous investigation has assessed this calibration method and found it to be lacking. With the availability of updated "required voltages," a reexamination of this calibration method was warranted. Audiometric corrections were determined for 21 combinations of audiometers and bone vibrators at five test frequencies with an artificial-mastoid system. These corrections were compared with those determined with the input-voltage method. The latter yielded corrections that agreed directly with or deviated no more than 5 dB from artificial-mastoid corrections 93.4% of the time and deviated by 10 dB only 6.6% of the time. The use of the input-voltage method for clinical calibration is advocated in the absence of an artificial mastoid.
已经提出了几种用于校准听力计骨导部分的方法。由于其成本低且易于实施，输入电压法很有吸引力。之前只有一项研究评估了这种校准方法，发现它存在不足。随着更新的“所需电压”的出现，有必要对这种校准方法进行重新审视。使用人工乳突系统，在五个测试频率下确定了21种听力计和骨振动器组合的听力测量校正值。将这些校正值与用输入电压法确定的校正值进行比较。结果表明，在93.4%的情况下，输入电压法得到的校正值与人工乳突校正值直接一致或偏差不超过5 dB，仅在6.6%的情况下偏差超过10 dB。在没有人工乳突的情况下，提倡使用输入电压法进行临床校准。
