TTS2 after Exposure to Music by Open Typed Headphone
TTS2 after Exposure to Music by Open Typed Headphone
复制标题
使用开放式耳机听音乐后的 TTS2
DOI：
10.4295/audiology.29.164
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Masahiro Hanamoto
中科院分区：
文献类型：
--
作者：
Y. Oishi;T. Ino;K. Koga;Masahiro Hanamoto
TTS 2假说认为，在停止8小时噪声暴露后2分钟测量的暂时性阈值偏移（PTS）非常接近于在相同水平的噪声暴露10-20年后产生的永久性阈值偏移（PTS）。4小时2000- 8000 Hz的TTS_2值为10- 17 dB。2）对30岁、40岁、50岁的3名受试者，用117 dB（SPL）声测TTS_2 1小时。前2名受试者在2000- 8000 Hz的TTS 2值为8- 10 dB，另1名受试者在8000 Hz的PTS值为40 dB。在这种情况下，这些耳朵在距离耳机1米处听不到90dB（A）的声音。
The TTS2 hypothesis states that a temporary threshold shift measured at 2 minutes after cessation of an 8 hours noise exposure closely approximates the permanent threshold shift (PTS) incurred after a 10-20 years exposure to that same level.1) TTS2 in young subjects aged from 19 to 23 years were measured by intensive music sound generated from an open typed headphone at 108dB (SPL) for 4 hours. The values of TTS2 at 2000-8000Hz were 10-17dB.2) TTS2 in 3 subjects aged about 30 years, 40 years and 50 years old were measured by 117dB (SPL) sound for 1 hour. TTS2 values in the former 2 subjects were 8-10dB at 2000-8000Hz, in the other subject PTS of 40dB at 8000Hz was revealed.3) The intensity of sound at 30cm distance from a headphone generating tone of 108dB (SPL) at ears were 55dB (A). In this condition those ears could not hear the voice of 90dB (A) at 1 meter distance from the headphone.