Thornton A R, Kimm L, Kennedy C R, Cafarelli-Dees D
MRC Institute of Hearing Research, Royal South Hants Hospital, Southampton, UK.
Br J Audiol. 1994 Apr;28(2):99-109. doi: 10.3109/03005369409077920.
The transient evoked otoacoustic emission (TEOAE), generated by a click and recorded in the ear canal is influenced by many factors. Of these, the form of the stimulus, the characteristics of the microphone, amplifiers and filter are probably the major ones. In addition, the acoustical loading of the ear canal by the probe may interact with the TEOAE measurement. Data presented here were obtained from 64 babies tested on each of 3 days post partum. The differences in the TEOAEs produced by the ILO88 and POEMS instruments can be quite marked. The ILO88 TEOAEs consistently have larger high frequency components than do the emissions from the POEMS system. The ILO88 system also gives higher correlations between repeat recordings. Such differences point out the need for explicit standards in probe design.
由短声诱发并在耳道记录的瞬态诱发耳声发射（TEOAE）受多种因素影响。其中，刺激形式、麦克风、放大器和滤波器的特性可能是主要因素。此外，探头对耳道的声学加载可能会与TEOAE测量相互作用。此处呈现的数据来自64名产后3天每天都接受测试的婴儿。ILO88和POEMS仪器所产生的TEOAE差异可能相当显著。ILO88的TEOAE高频成分始终比POEMS系统的发射信号大。ILO88系统在重复记录之间也具有更高的相关性。这些差异表明在探头设计方面需要明确的标准。
