Han L A, Poulsen T
Department of Acoustic Technology, Technical University of Denmark, Lyngby, Denmark.
Scand Audiol. 1998;27(2):105-12. doi: 10.1080/010503998420342.
Equivalent Threshold Sound Pressure Levels (ETSPLs) have been determined for the Sennheiser HDA 200 earphone and the Etymotic Research ER-2 insert earphone. Thirty-one young normal-hearing test subjects participated and the thresholds were determined for all recommended frequencies in the frequency range 125 Hz to 16 kHz. The results for the HDA 200 earphone are generally in very good agreement with the results from two other investigations which are available at present. Only at 6 kHz is a 9 dB deviation found and at 8 kHz a 6 dB deviation is found between the three investigations. For ER-2 it has not been possible to find other ETSPL determinations in the literature.
已经确定了森海塞尔HDA 200耳机和音特美ER-2入耳式耳机的等效阈值声压级（ETSPL）。31名听力正常的年轻受试者参与了测试，并确定了125Hz至16kHz频率范围内所有推荐频率的阈值。HDA 200耳机的测试结果与目前已有的另外两项研究结果总体上非常吻合。三项研究之间，仅在6kHz时发现有9dB的偏差，在8kHz时发现有6dB的偏差。对于ER-2耳机，尚未在文献中找到其他等效阈值声压级的测定结果。
