• 한국멀티미디어학회논문지
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• 제21권2호
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• pp.261-270
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• 2018

Hearing-impaired people are increasing rapidly due to the global aging trend. Early detection of hearing loss requires an easy-to-use audiometry device for the public. Existing audiometry systems were developed as PC-based, PDA-based, or smartphone apps. These devices were often dependent on specific software platforms and hardware platforms. In this paper, we tried to improve software platform compatibility by using cross platform, and tried to implement IoT-based pure tone audiometry device which does not require sound pressure level correction due to hardware differences. Pure tone audiometry is available in a variety of ways depending on the type of hearing loss and age. Using the IoT-based audiometry device implemented in this paper, it will be possible for an app developer who lacks hardware knowledge to easily develop an app with various scenarios for hearing screening. The results of this study will contribute to overcoming the software and hardware dependency in the development of IoT-based healthcare device.

• 센서학회지
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• 제28권5호
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• pp.289-293
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• 2019

This paper presents a remote patient monitoring system for diagnostic pure-tone audiometry. A pure-tone audiometer was developed for basic hearing screening; its performance was evaluated according to international standards in terms of linearity, accuracy, and total harmonic distortion. Pure-tone audiometry has a maximum hearing level of 104.9 dB HL that is comparable with other commercial products. The audiometer shows satisfactory linearity with a deviation of ${\pm}0.4dB$, an accuracy of ${\pm}0.025%$, and a total harmonic distortion (THD) of 0.21%. The remote patient monitoring systems include remote control devices based on wide area network (WAN) connections and an audiometer connected in series. Through experimentation, we successfully performed real-time diagnostic communication without delay in transferring audiometric data. This system is expected to supply domestic equipment in the audiometric market and to improve the quality of life of patients in non-clinical environments.

• 말소리와 음성과학
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• 제2권3호
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• pp.151-156
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• 2010

The purpose of this study was to develop a computer-animated pure tone audiometry for screening (CAPTAS) for toddler and to determine its validity and reliability. The CAPTAS utilizes an animated cartoon story producing visual and auditory stimuli. The intensities were 40 dB, 60 dB, 80 dB. The frequencies were 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz. The subjects were 20 (9 males and 11 females) severely hearing impaired children. As a result, The correlation coefficient between mean hearing threshold of children who were able to perform PTA and average hearing threshold of CAPTAS was performed and it revealed CAPTAS's high validity. And to verify the reliability of the re-test, all children had the CAPTAS and repeated it periodically. The result confirmed the reliability.

• 대한의생명과학회지
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• 제20권4호
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• pp.201-208
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• 2014

This study was conducted to investigate hypoacusis due to workplace noise among dental technicians. Pure tone audiometry, impedance audiometry and heart rate variability were measured for 60 dental technicians and office workers in D city from July to November 2013, and a survey on the effects of noise was conducted. SPSS 19.0 was used for statistical analysis. In the result for threshold of pure tone audiometry, the average hearing threshold of left ears in the air conduction (AC) test showed a statistically significant decrease (P=0.019) among dental technicians, who are frequently exposed to workplace noise. The hearing threshold in the AC test for each frequency was significantly different between the two groups at 125 Hz (P=0.012) in right ears and at 1 kHz (P=0.022), 2 kHz (P=0.040), and 8 kHz (P=0.018) in left ears. Dental technicians who had worked for 16 years or longer had a significantly higher incidence of hypoacusis in the right ear (P=0.030) and in the left ear (P=0.010). In impedance audiometry showed a tympanometry result of type A in both the dental technician group and the office worker group.

• 한방안이비인후피부과학회지
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• 제15권2호
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• pp.156-168
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• 2002

Backgrounds : sudden sensorineural hearing loss is defined as a disease that has abrupt onset of sensorineural hearing loss without definite cause. In some cases, this disease cause tinnitus, vertigo, headache addition to hearing loss. In traditional oriental medicine, sudden sensorineural hearing loss is could be diagnosed as deficiency of Yang-Gi(陽氣). Objects & Methods : This study is clinical observation about three sudden sensorineural hearing loss cases. For diagnosing in these cases, pure tone audiometry was used. For treatment, acupuncture, herbal-medicine and moxibustion therapy were used. Results & Conclusions : as follows. 1. Generally, in this disease, the shorter the whole period from the time that occurs to the time that starts to treat is, the more the results are better. The research shows that short-term case is more efficient than the other long-term two cases in the aspects of symptoms and pure tone audiometry . 2. In making a diagnosis of sudden sensorineural hearing loss and measuring the effect, subjective symptoms generally correspond to the improvement of pure tone audiometry, but not completely. Therefore, in treating patients, the doctor must consider these both aspects and keep the balance.

• 전기학회논문지
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• 제56권6호
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• pp.1157-1164
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• 2007

In this paper, we implement a PDA(Personal Digital Assistant)-based audiometric system in order to estimate hearing threshold by adopting both pure-tone sound and speech audiometric test system. To estimate a subject's hearing threshold in an ambulatory audiometric test environment, an efficient sound calibration scheme between a PDA and a headphone device is proposed by appling polynomial fitting algorithms in 8-banded frequency ranges.

• 한방안이비인후피부과학회지
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• 제19권2호
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• pp.263-271
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• 2006

Objective : This study describes the cases of sensorineural hearing loss (SSNHL) patients with marked or complete recovery. Methods : Three patients received oriental medical treatments continuously for more than 1 month and measured the hearing recovery. For diagnosis on these cases, pure tone audiometry (GSI 38, Welch allyn company) was used. For treatment, acupuncture, herbal-medicine and moxibustion treatment were applied. Results : All patients of this report had the recovery of hearing. In 2 cases, the pure-tone 5 frequency (0.25, 0.5, 1, 2, 4 KHz) average improved by more than 35 dB (Marked recovery). In 1 case, it was within the normal limits after oriental medical therapy (Complete recovery). In addition, tinnitus and vertigo decreased in all patients. Conclusions : We may expect that the oriental medical therapy improvers the hearing recovery in the patients of SSNHL.

• 한국안광학회지
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• 제14권3호
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• pp.89-93
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• 2009

목적: 본 연구는 굴절교정된 정상안에서 운무 전후에 따른 순음청력검사 값의 변화를 알아보고자 시행하였다. 방법: 안질환이나 청각질환이 없으며, 교정시력이 1.0이상의 젊은 성인 50명(남자: 30명, 여자: 20명)을 대상으로 하였다. 시력교정 전후의 순음청력역치(pure tone threshold)의 변화를 순음청력검사(pure tone audiometry)를 통해서 비교해 보고자 하였다. 결과: 전 주파수 대역에서 운무 후의 순음청력역치가 운무 전보다 더 높게 나타났으며, 그 차이는 2000 Hz를 제외한 전 주파수 대역에서 통계적으로 유의하게 측정되었다(p<.05). 저주파수 대역인 250 Hz와 500 Hz에서 각각 6.8${\pm}$8.4 dBHL과 4.3${\pm}$6.6 dBHL로 나타나 다른 주파수 대역에 비해서 그 차이가 크게 나타났고, 중주파수 대역인 2000 Hz에서는 0.8${\pm}$4.5 dBHL로 가장 작게 나타났다. 결론: 굴절교정된 정상인에서 운무 전과 후의 순음청력검사의 역치값이 다르게 나타나 망막상의 선명도와 청각은 서로 영향을 주는 것으로 판단되며 이 결과는 굴절교정과 청각의 상관성을 제공하는 기초자료로 활용될 수 있을 것으로 사료된다.

• 디지털융복합연구
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• 제14권4호
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• pp.363-370
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• 2016

소음은 원하지 않는 소리로서 소음의 노출은 스트레스와 난청의 원인이 된다. 본 연구에서는 치기공과 학생의 치과기공 소음 노출에 의하여 스트레스와 순음청력에 미치는 영향을 파악하기 위하여 심박변이도와, 공기전도검사와 골전도검사를 실시하였다. 치기공과 학생의 나이, 키와 체중은 대조군과 유사한 결과를 나타냈다. 스트레스의 저항도를 나타내는 심박 표준편차와 부교감신경의 활성과 관련 있는 norm HF는 유의적으로 감소하였으며, 심박수, 교감신경의 지표인 norm LF, 교감신경과 부교감신경의 비율은 유의적으로 증가하였다. 공기전도검사 결과 치기공과 학생의 오른쪽 귀의 125, 250, 500, 1000, 2000, 3000, 4000, 6000 Hz와 왼쪽 귀의 125, 250, 500, 1000, 2000 Hz에서 역치와 골전도검사 결과 오른쪽과 왼쪽 모두 250, 500, 1000, 2000, 4000 Hz에서 역치가 유의적으로 증가하였다. 또한, 순음청력검사 결과를 4분법을 이용하여 어음영역의 평균을 비교한 결과 치기공학과 학생에서의 역치가 모두 유의적인 증가를 보였다. 이와 같은 결과를 종합해 보면, 치기공학과 학생들에게 노출된 치과기공 소음에 의해서도 스트레스의 증가와 청력소실이 유발될 수 있으므로 적절한 예방책을 찾아야 할 것이다.

• 사상체질의학회지
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• 제23권3호
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• pp.419-428
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• 2011

1. Objective: The aim of this study was to report significant improvement of tinnitus and insomnia after treatment with Cheongsimyeonja-tang in a Taeeumin patient with Idiopathic Sudden Sensorineural Hearing Loss(SSHL) that accompanied with Tinnitus. 2. Method: We measured the hearing recovery. For diagnosis on this case, pure tone audiometry was used. The degree of improvement was evaluated by Siegel's Criteria. Visual Analogue Scale(VAS) and Tinnitus Handicap Inventory(THI) were also used to assess tinnitus objectively. 3. Result: There was no improvement in pure tone audiometry by Siegel's Criteria. However, VAS score was decreased from 10 to 1 and THI score was also decreased from 74 to 48. 4. Conclusion: A patient with SSHL, who has little possibility of recovery of hearing loss, was treated with Cheongsimyeonja-tang in a short period and significant improvement in tinnitus and insomnia was observed. We consider that consistent treatment of Cheongsimyeonja-tang can contribute to improve the hearing loss.