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Item 學校噪音與教師授課音量、嗓音健康及其聽覺徵候變化之相關研究(健康促進與衛生與衛生教育學系, 2000-12-??) 董貞吟本論文之主要目的在探討學校環境噪音與教師授課音量之關連，又吵靜地區學校教師之自覺噪音健康問題及其聽覺徵候變化是否不同。經學校環境噪音現勘結果，立 意選取研究樣本包括吵地區之國小級任老師126名及郊區安靜學校教師100 名。以問卷收集教師基本資料及其自覺噪音異常之狀況，並經教室背景音量調查、教師授課音量測量及教師噪音音質錄音資料之實驗室分析。結果發現教師授音量會 隨教室背景噪音升高而增加，證明教室?景噪音易誘發教師告成不良的發聲習慣。教師平均回答有3個顯著噪音問題症狀，且吵校教師自覺有明顯症狀者顯著較靜校 教師多。然而三項聽覺徵候（jitter、shimmer和H/N比）並未隨授課時間增長而有顯著變化，顯示其與教師主觀感受之不一致性，但在 shimmer值上吵靜校間有顯著差異，表示吵校教師之噪音狀況較差。Item 噪音特性、年齡與暫時性聽力損失關係之實驗研究(健康促進與衛生與衛生教育學系, 2003-12-??) 董貞吟; 黃乾全; 曾馨儀本研究目的在探討不同噪音特性及年齡在不同噪音位準暴露下，所引起之暫時性聽力損失效應。研究採立意取樣選擇二個年齡層，分別為20、40(±5)歲之自 願者、無耳朵疾病史且無特殊噪音暴露經驗，並經檢查聽力正常者各為15及14人為研究對象，使其重複暴露在交通噪音及4k純音之85、90、 95Dbspl等不同位準噪音下30分鐘，於實驗前及暴露後2分鐘測其聽力(TTS2)，並在95dB的交通噪音暴露後，測其不同時間(暴露2分、20 分、40分、60分)的聽力，以了解其暫特性聽力損失的恢復情形。此外，The Reed-Muench也被應用於噪音暴露ED50之計算。結果發現暴露音源為純音者較交通噪音更能預測TTS，且有較典型之劑量反應。TTS2恢復時以 以6KHz最慢，而ED50以40歲組純音暴露最低，在6KHz僅82.8dB。Item 噪音對人體聽覺影響之實驗研究(國立臺灣師範大學研究發展處, 1983-06-??) 王老得An experimental study on the noise-induced hearing loss or noise-induced temporary threshold shift (NITTS) of the normal hearing college students (30 male and 30 female) was performed with three kinds of narrow band noise, including 250Hz, 1 KHz and 4KHz octave bands, and six different sound pressure levels of broad band noise, which were used white noise at sound pressure levels of 65, 70, 75, 80, 85 and 90 dB as stimulating tones.The mean age of this study subjects was 21.28 years in male group and 21.8 years in female group. First of all, all subject were measured with their hearing levels by using Rion AA39 audiometer, and then the persons with less 15 dB in average hearing level of speech range (500Hz, 1KHz, and 2KHz) were selected as the normal hearing subjects. The actual mean values were 9.55 dB in male group and 9.83 dB in female group.Two minutes after exposure to each stimulating noise ceased, the subject was retested with the hearing levels on 4KHz and 6KHz, and then compared with that of preexposure to the stimulating noise. If the difference of value between pre-and post-exposure hearing level on 4KHz or 6KHz shows 5 dB or greater, it is defined as a positive response of NITTS.The inciaence of positive TTS2 shows 65% among 60 subjects after 50 seconds of exposure to the broad band noise; and 3.3%, 16.7%, 30% after 50 seconds of exposure at 70 dB SPL to the 250Hz, 1KHz, 4KHz octave-band noises respectively.According to Reed-Muench bioassay method, LD50 value shows 80.99 dB SPL for the white noise exposure, In other words, 50% of subjects in this study group reveals positive TTS2 after exposure for 50 seconds to white noise at 80.99 dB sound pressure level.So the 81 dB SPL of the white noise may be referred to as the risk-criterion limit of "Noise Control Administration in Taiwan" for the broad band noise. If the environmental noise contains the 4KHz or higher pure-tone components and/or high octave bands, the risk-criterion limit must be decreased reaso