pure tone

Influencing Factor and Countermeasure of Pure Tone Audiometry

影响纯音听阈测定的因素和对策

Pure tone is a sine wave.

纯音是正弦波.

Both tone is harmonious, this moment Che Mu and the vehicle unified whole, outlines the resolute part pure in heart condition.

两者色调和谐，此刻车模与车浑然一体，将锐志部分清心寡欲的状态勾勒出来。

Application of Evaluation Standards of Pure Tone Audiometry in Health Examination among River Sailors

纯音听力测试结果评价标准在内河船员体检中的应用体会

History of illness, physical examination, pure tone audiometry, auditory brainstem responses ( ABRs) were obtained from members of these families.

对调查的家系成员进行病史、体检、纯音测听及听性脑干诱发电位检查。

Control analysis of pure tone audiometry indexes in patients with rheumatoid arthritis

类风湿性关节炎患者的纯音测听指标对照分析

Aim: To observe the changes of distortion product otoacoustic emissions ( DPOAE) in 40 submariners with normal pure tone audiogram.

目的：了解潜艇员听功能状态与畸变产物耳声发射（DPOAE）的关系。

This discovery is important to pure tone test and ABLB.

此现象的发现对临床ABLB及纯音检测方法都是一个新的且有意义的提示。

Objective: The purposes of this study was to analyse the significant of low frequency air-bone gap in enlarged vestibular aqudeduct ( EVA) patients according to the pure tone audiogram and the benefit for clinic diagnosis of the EVA.

目的：分析前庭水管扩大（EVA）患儿行纯音测听检查时出现低频骨气导差的比例，探讨纯音测听检查辅助临床诊断EVA的意义。

Methods To check on objective acoustic impedance and subjective pure tone audiometry.

方法对外伤性聋进行客观声导抗测试和主观纯音测试。

Results All cases were operated successfully. 78 cases ( 132 ears) were followed up with 7~ 12 months. These cases hearing were improved significantly, pure tone threshold average was 21.6 dB and audibility threshold elevated 28 dB averagely.

结果所有置管均一次完成，术后7～12个月复查78例（132耳），疗效显著，纯音测听平均为21.6dB，听阈平均提高28dB。

An investigation on feasibility of pure tone sound field audiometry

纯音声场测听可行性研究报告

Methods TEOAE was recorded with Madsen Celesta 503 in 317 ( 634 ears) primary school children, then the results were compared with gold standard test group, including otoscopy, pure tone audiometry and tympanogram.

方法用Madsen Celesta503耳声发射仪对317例（634耳）正常农村小学1~6年级学生进行听力筛查，并用耳镜、纯音测听和鼓室导抗图系列检查作为金标准，验证其结果。

Study on Correlation of Distortion Product Otoacoustic Emissions and Pure Tone Audiometry

畸变产物耳声发射幅值与纯音听阈相关性的研究

Objective To investigate the auditory conditions in mariners and probe the relationship between the pure tone audiogram and DPOAE audiogram.

目的了解舰艇艇员的听力状况并探讨纯音听力图与DPOAE听力图的关系。

The present study measured CNV on 17 volunteerswith 2000,4000 Hz pure tone.

测试音采用2000、4000H之纯音.

Audiometer: Pure Tone Audiometer, Impedance Audiometer;

听力计：纯音听力计、阻抗听力计；

The hearing status in each frequency had good relation between the pure tone audiogram and DPOAE audiogram.

DPOAE听力图与纯音听力图个各在频率均有很好的对应关系。

Analysis of pure tone audiogram should be combined with the age and the fomer history of patients.

对听力图应结合患者年龄及过去病史进行分析。

TEOAE energy distribution takes the average energy of the normal hearing persons as 0 dB, and 5% percentage at single side as the 95% normal value range. TEOAE energy distribution represents the energy loss and is convenient for the comparison to the pure tone audiogram.

TEOAE能量分布图以正常人的平均能量作为0dB，以单侧5%位数作为95%正常值范围，它体现了能量的损失情况，便于与纯音测听的结果相比较。

Acoustics Audiometric test methods Part 2: Sound field audiometry with pure tone and narrow-band test signals

GB/T16296-1996声学测听方法第2部分：用纯音及窄带测试信号的声场测听

When the level of pure tone auditory threshold> 50 dBHL, DPOAE disappeared.

当纯音听阈＞50dBHL时，DPOAE消失。

The relationship of the pure tone audiogram and DPOAE audiogram were tested. Results The detected DPOAE rate and DPOAE amplitudes in normal hearing group were significantly higher than that in other three groups ( P < 0.05).

结果纯音听阈正常组的DPOAE检出率及DPOAE振幅明显高于低频听力下降组、高频听力下降组及全频听力下降组（P＜0.01或0.05）；

Conclusions A comprehensive analysis should be made on the basis of the age, the past history and pure tone audiogram of the patients.

结论应根据年龄、病史，结合听力图进行综合分析；

It is evidenced that DPOAE test is more sensitive than pure tone audiometer test and the amount of it is reduplicated and steady.

音测听对听力下降的反应更加敏感，大量研究事实表明，DPOAE测试比纯而且其幅值在自身具有良好的可重复性及稳定性。