MethodsTwenty volunteers with normal hearing level and tympanic pressure were enrolled and kept at airtight container. The inner pressure was changed to 2 kPa and 4 kPa below normal atmospheric pressure in 50 s and recovered to the normal pressure, the pure tune hearing threshold of 500, 1 000 and 2 000 Hz and tympanic pressure were measured, and acoustic impedance curve characteristic and tympanic membrane appearance were recorded at each time points.

方法選取聽力和鼓室壓力正常的受試者20例亚洲图片欧美激情，即單耳40耳韩国无码视频免费观看，評估其于50s改變密閉模擬電梯容器壓力低于正常大氣壓2kPaAa黄色网址、50s改變密閉容器壓力低于正常大氣壓4kPa黄片国产免费看、以及壓力恢復(fù)至正常水平時(shí)，言語頻率500免费观看黃色A片一级视频喷水、1000欧美亚洲自拍偷拍、2000Hz的純音聽閾，鼓室壓值和聲阻抗曲線圖形形態(tài)国产欧美一级二级，以及鼓膜形態(tài)人人看人人射人人操。

The study also evaluates the effects of FbAANC headset on speech intelligibility on a disyllabic Mandarin word discrimination test platform. We expect someone under the noisy environment in SNR equal 0,–5,–10,-15,-20 and –25 dB, the noise cancellation technique could either improve the speech discrimination effectively. Finally, the SNR below -10dB, the mean WDT score with FbAANC headset was superior to without FbAANC headset 13 to 32% through 30 subjects of normal hearing threshold for evaluation. These results suggest that the FbAANC headset would be useful for hearing protection in workplaces with high levels industrial noise.

同時(shí)，本論文亦透過華語雙字詞語音辨識力測驗(yàn)国产福利最新地址发布页8010，以評估此噪音消除技術(shù)對於語音理解力的影響欧美日大黄片，期望在SNR為0，-5免费黄色a片大全，-10国产91精品宾馆，-15，-20和-25dB的環(huán)境下国产黄片精品在线，暸解噪音消除技術(shù)能否有效提升語音辨識力国产原创精品在线；經(jīng)過30位正常聽力的受測者之評估，我們可以得到當(dāng)訊噪比在-10 dB以下時(shí)www.人妻一级黄四色AV日韩AV，經(jīng)過噪音消除后的語音辨識力成績可明顯地提升13 to 32%一级A片福利片，因此，本噪音消除耳機(jī)確實(shí)可以作為耳機(jī)防護(hù)以提供給工人對抗高分貝的工廠噪音国产综合久偷自。

The average of hearing threshold shifts at high frequencies(4k, 6k, 8kHz) is considerably larger than that at low frequencies(0.5k, 1k, 2k Hz). The moderate to severe degree of hearing loss of the paper mill workplace of subjects showed maximum notches at the frequency of 4 kHz. The noise-exposure group grades of DNA damage were significantly higher then the controls.

經(jīng)扣除年齡老化因素所得到的聽力損失修正值wwwwxxxx国产，結(jié)果顯示在談話性低頻率0.5KHz、1 KHz中亚洲精品免费线视频观看视频，女性比男性聽力損失嚴(yán)重黄色精品国产，并以女性、≧50歲色综合久久一区二区观看、右耳日韩精品碰碰视频、1 KHz 之平均值39.0±17.2dB為最高值，而於高頻率2KHz至8 KHz中国产一区二区青草久久，不同年齡層之比較人人色人人操，以男性、≧50歲亚洲免费高清视频、右耳26uuu在线視頻、8KHz之平均值49.0±27.1dB為中度至重度聽力損失情形。

It is important that people using hearing aids continue to receive advice and support about assistive hearing devices after they receive their aids, to ensure that their specific needs are being met.

這是非常重要的人使用助聽器繼續(xù)接受咨詢和支持有關(guān)輔助聽覺裝置后www.日本在线播放，他們收到他們的艾滋病国产综合一区二区三区精品，以確保他們的具體需要得到滿足。

Objective To explore the prediction of bone-conduction of audiometric threshold in normal-hearing adults using multiple auditory steady-state response. Methods BC-ASSR and BC-A were recorded in 20 normal-hearing adults(10 males and 10 females). The response thresholds and the behavioral thresholds were compared at 0.5, 1.0, 2.0 and 4.0kHz to get the correlation and regression formulae.

目的 探討多頻聽性穩(wěn)態(tài)反應(yīng)評估聽力正常青年人骨導(dǎo)純音聽閾的可能性久久国内免费黄色，旨在觀察聽力正常青年人骨導(dǎo)多頻聽覺穩(wěn)態(tài)反應(yīng)測試的正常值特點(diǎn)最新国产裸模视频视频在线，進(jìn)一步探討骨導(dǎo)ASSR的反應(yīng)閾與骨導(dǎo)純音聽閾的相關(guān)性，為臨床上對不能配合做純音測聽的患者行聽力評估時(shí)提供客觀參考色婷婷五月亚洲一区二区91。

Objective: To discover the hearing disorder and its related factors in neonatus by evaluating the detective rate of distortion product otoacoustic emissions in hearing screening in Tanggu district of Tianjin.

目的：通過對天津市塘沽區(qū)新生兒先天性聽力障礙發(fā)病率的篩查亚洲欧美视频网站，了解新生兒聽力障礙及其相關(guān)因素。

Objective:to probe the application on the hearing screening of the neonatus by transcience otoacoustic emission.methods: to undertakethe hearing screening of the neonatus by transcience otoacoustic emission of 2 100 neonatus from 2006.1~2006.12.results: 2 058 (98.4%) full-term newborn infants pass the transience otoacoustic emission once and 33(1.6%) full-term newborn infants can not pass it once.9(77.8%) premature infants pass the transience otoacoustic emission once and 2 premature infants can not pass it once.conclusion: the transience otoacoustic emission is worth to application because it has non-wound, fast, objective merit.

目的：探討觀察瞬態(tài)耳聲發(fā)射在新生兒聽力篩查中的應(yīng)用十八禁无码。方法：對2006年1月~2006年12月2 100例新生兒利用瞬態(tài)耳聲發(fā)射進(jìn)行聽力篩查的資料進(jìn)行分析一级A色片。結(jié)果：2 091例足月新生兒中，一次通過瞬態(tài)耳聲發(fā)射進(jìn)行聽力篩查 2 058例综合性天堂在线，占98.4%久久九一，未通過33例94自拍视频，占1.6%，早產(chǎn)兒9例中欧美骚逼，一次通過檢測7例日本mmm，占77.8%，未通過2例啊好爽用力插视频，占22.2%日韩成人播放无码AV。全部未通過新生兒檢查abr，確診有異常15例女人一级毛多A片，正常7例91免费高清在线观看视频。結(jié)論：瞬態(tài)耳聲發(fā)射具有無創(chuàng)傷、快速h人成视频在线观看网站入口、客觀性xxxxfreexxxx、敏感度高等優(yōu)點(diǎn)，值得在新生兒聽力篩查中廣泛推廣應(yīng)用黄色视频人人干人。

But a number of defects and deficiencies exist yet in our country"s present administrative hearing system compared to western countries, such as the lack of transparency, the nondependent legal status of the host, the ambiguity of record and the faultiness of the system itself, because it was not a long time since introduced from foreign countries. And how to use the western countries" experiences for reference and integrate our practicality is very significant, in order to develop and perfect our countrys administrative hearing.

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The clinical data of 10 patients with early hearing loss in nasopharyngeal carcinoma were analyzed retrospectively. The patients underwent hearing test, indirect laryngoscopy or fiberoptic pharyngorhinoscopy, CT, and neoplasm pathologic observation.

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Therefore, the model of human ear and the hearing effect are introduced, and the influence of Hass effect, pinnae effect, reflection and reverberation to the hearing is analyzed too.

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