Reuter W, Schönfeld U, Fischer R, Gross M
Abteilung für Audiologie und Phoniatrie, Universitätsklinikum Benjamin Franklin, Freie Universität, Berlin.
HNO. 1997 Mar;45(3):147-52. doi: 10.1007/s001060050104.
Since reliable headphones are now available, clinical audiometry can also be performed in extended high frequencies (EHF). Hearing in frequencies over 10 kHz is more influenced by age, noise and toxicity. Thus it is useful to take additionally results in children to establish the normal hearing threshold. In the present study, 35 pre-school children (ages 4-7 years) were tested by EHF (8 kHz-16 kHz) using a new Sennheiser HDA-200 headphone. The hearing thresholds recorded corresponded to those of other studied. Median and standard deviations for 10 kHz were 25 dB(SPL) +/- 12 dB(SPL), 35 dB(SPL) +/- 12 dB(SPL) for 12.5 kHz and 50 dB(SPL) +/- 15 dB(SPL) for 16 kHz. In the older children (> 5 years), hearing thresholds could be more reliably determined and were 10 dB(SPL) better than in the younger children (< 5 years). Thresholds at 10 kHz-12.5 kHz corresponded to those found in adults, but were more sensitive by 5 dB(SPL)-15 dB(SPL) in the 14 kHz-16 kHz range.
由于现在已有可靠的耳机，临床听力测定也可在扩展高频（EHF）范围内进行。超过10kHz频率的听力受年龄、噪声和毒性的影响更大。因此，额外获取儿童的检测结果以确定正常听力阈值是有用的。在本研究中，使用新的森海塞尔HDA - 200耳机对35名学龄前儿童（4 - 7岁）进行了EHF（8kHz - 16kHz）测试。记录的听力阈值与其他研究结果一致。10kHz的中位数和标准差分别为25dB(SPL) +/- 12dB(SPL)，12.5kHz为35dB(SPL) +/- 12dB(SPL)，16kHz为50dB(SPL) +/- 15dB(SPL)。在年龄较大的儿童（>5岁）中，听力阈值能够更可靠地确定，并且比年龄较小的儿童（<5岁）要好10dB(SPL)。10kHz - 12.5kHz的阈值与成年人的阈值相当，但在14kHz - 16kHz范围内要敏感5dB(SPL) - 15dB(SPL)。
