• Title/Summary/Keyword: Pure Tone

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Association between air conduction hearing threshold and blood viscosity in normal adult males (정상 성인남자에 있어서 기도청력역치와 혈액점도와의 연관성에 관한 연구)

  • Kim, Sang-Woo;Lee, Jong-Young;Park, Wan-Seup;Woo, Kuck-Hyeun
    • Journal of Preventive Medicine and Public Health
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    • v.30 no.3 s.58
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    • pp.623-629
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    • 1997
  • This is cross-sectional study to evaluate a potential relationship between air conduction hearing threshold and blood viscosity in normal adult males(n=1677). We measured hearing threshold in frequency level at 500, 1000, 2000, 4000Hz by pure-tone audiometry and RBC profiles containing red cell number, hemoglobin, hematocrit. Blood viscosity are replaced by hematocrit that are one major factor of influencing blood viscosity. PTAs(pure-tone averages) are measured by hearing threshold averages level at 500Hz, 1000Hz, 2000Hz. Grades of PTAs(pure-tone averages) are divided three groups that are less then 10.0dB group, between 10.0-19.9dB group and excess 20.0dB. The results shows significant association among hematocrit, red cell number and hearing loss(age adjust by ANACOVA).

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The color characteristics of preferred clothing textiles of college students in spring and fall - A comparison of clothing textiles for top and bottom - (대학생의 춘추용 의복품목별 선호소재의 색 특성 연구 - 상의와 하의용 의복소재의 비교 -)

  • Kim, Hee-Sook
    • Journal of the Korean Home Economics Association
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    • v.44 no.10
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    • pp.47-55
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    • 2006
  • The purpose of this study was to analyze and compare the color characteristics of preferred clothing textiles of college students. One hundred nine male and female college students were evaluated for their preference to clothing textiles in previous research. To analyze the color characteristics, spectral data were measured. Color, color tone, and values of $L^*,\;a^*,\;b^*$ according to clothing item were compared. In addition, chromaticity diagram was drawn. The results of this study were as following. 1. The color of the shirts textile that college student preferred most in spring/fall was PB(purple blue) color, lt(light) tone. In general, the preferred textiles for shirts represented a simple color that is close to achromatic color with light and soft shade. The color of the blouse textiles that college student preferred most was PB color, d(dull), g(grayish) and W(white) tone. 2. The most frequently shown color of upper garment was PB, followed by Y(yellow) for shirt and R(red) for blouses. College students prefer a simple color which is close to achromatic color, and a light and soft color was preferred for shirts fabric and they preferred various, medium shades, but closer to pure colors for blouses because college students tend to consider that the aesthetic side is important and usually wear blouses less often than shirts. 3. For slacks, the colors of the preferred textiles were B(blue), PB color and lt.g.(light grayish), g, d and bk(black) tone. Therefore, the preferred textiles for slacks represented simple colors such as bluish or close to achromatic color with light or dark shade. For skirt, YR(yellow red), PB color and lt.g, lt, d. tone were preferred. Therefore, soft light or moderately toned various colors that are close to pure color were especially preferred for skirts. 4. The colors of preferred fabrics for slacks and skirts differed. The colors of the preferred fabrics for slacks were mostly cold color, whereas those of skirts were mostly warm color. And college students preferred various, medium shaded and closer to pure colors for skirts because they tend to consider the aesthetic side as being important. 5. The pattern of preferred fabrics was mostly solid, regardless of clothing item, and melange was the second most preferred pattern. 6. Through the analysis of $L^*,\;a^*,\;b^*$ values, shirt and blouse textiles showed higher $L^*$ value than that of slacks and skirt. The preferred textiles of college students were generally close to achromatic color because the values of $a^*$, and $b^*$ were very low, as confirmed by the result of the chromaticity diagram.

A Study on the Active Noise Control Algorithm for Rreducing the Computation Rime (계산속도를 증가시키기 위한 능동소음제어 알고리즘에 대한 연구)

  • 박광수;박영진
    • 제어로봇시스템학회:학술대회논문집
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    • 1993.10a
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    • pp.699-703
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    • 1993
  • When the error path can be modeled as a pure delay, an adaptive algorithm for slowly time varying system is proposed to minimize the sound pressure level. This algorithm makes it possible to use the fittered-x LMS algorithm with on-line delay modeling of the error path. Another simple adaptive algorithm for pure tone noise is proposed which eliminates the cross term in the multiple error filtered-x LMS algorithm.

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THE EFFECT OF INTENSITY ON DURATION DISCRIMINATION

  • Jeon, J.Y.;Fricke, F.R.
    • Proceedings of the Acoustical Society of Korea Conference
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    • 1994.06a
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    • pp.879-884
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    • 1994
  • This paper reports on several experiments carried out to find the effects of intensity difference on duration discrimination in pairs of pure tones. Pure-tone signals were presented with the modification of amplitude and duration. Duration-discrimination thresholds for the musical tones and the signals that were varied in amplitude were investigated together with those of the fixed signals. From the results, it was found that the duration discrimination tasks are affected by an intensity difference of 20 phons.

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The effects of a temporal masking on the sound laterlization (시간 마스킹이 음상정위에 미치는 영향)

  • Lee, Chai-Bong
    • The Journal of the Korea institute of electronic communication sciences
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    • v.5 no.4
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    • pp.352-356
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    • 2010
  • In this study, it is discussed how the directional property of the sound lateralization is influenced by proceeding or succeeding tone. The acoustic source applied here is a reference sound which has 0.5 msec interaural time difference(ITD). Based on this reference sound, interfering sounds with five levels of magnitude are applied to the subjects with four kinds of inter-stimuli time intervals(ISI). The interfering sounds are also added as two different types, proceeding tone and succeeding tone. Additionally, in order to investigate a frequency influence, the reference sound and the interfering sounds are generated by using 2kHz, 4 kHz and a white noise. As a result, the influence on lateralization by proceeding tone is lager than that by succeeding tone. It can consider this result as the effect of temporal masking on lateralization. Moreover, there are small differences of masking effect on lateralization by combinations of pure tone. This result shows that the dependency of frequency domain between reference sound and interfering sound is small on the sound lateralization.

KSLV-I FTS 수신기용 Tone Filter 설계

  • Hwang, Soo-Seul;Lim, You-Chol;Lee, Jae-Deuk
    • Aerospace Engineering and Technology
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    • v.3 no.2
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    • pp.104-115
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    • 2004
  • In this study, contains Design and Simulation data for Tone filter applied to the KSLV-1 FTS Receiver. Received Signal contains unwanted Noise and Jitter which should be eliminated by any kind of filters. In the design of KSLV-1 FTS Receiver, two different type of filters are used. One is Low-Pass Filter for rejecting high order harmonics and another is Tone Filter for sorting pure original signal in the mixed demodulate Signals. For the purpose of this development, various kinds of filter are studied and simulated for finding adequate type of filter.

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Color Image Analysis of Cosmetic Web-Site for Color Marketing

  • Lee, Jeongman;An, Jongsuk
    • Journal of Fashion Business
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    • v.16 no.6
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    • pp.127-143
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    • 2012
  • This study aims to derive the sensitive image analysing the color tones based on the web-sites of cosmetic brand and to know how the web-site color tones and the color tone image as visual factor for information transfer do influence the effective communication. 10 cosmetic brand web-sites are selected based on the pre survey, and the main page color tones of cosmetic brand web-site are analyzed by Color Catch and Munsell Conversion program, whereas the composition of color tones and color image such as the main trend colors, secondary colors, accent colors and etc are analyzed by a graphic professional program 'Adobe Photoshop'. 5 color tone groups are classified as Black&White, Green&White, Blue&White, Purple&White and Red&White according to the color distribution chart, and the emotional language is derived applying them to the pre research and IRI image scale. The color association is empirically analyzed by a survey method. The study results finally show Black&White is proper for expression of high quality and modern image, Green&White for pure and clean image, Blue&White for cool and transparent image, Purple&White for mysterious and elegant image respectively. This study results are necessary for plan of color delivering the strong transferring power of visual information the time when to make the effective web-sites, and it hopefully will be utilized as the basic data for the color marketing to actively express the brand identity and to satisfy the consumers' sensitivity.

Research for Characteristic of Directional Sound Image Idealization at Stereo System Using Different Phase Pure Tone (순음의 위상차를 이용한 스테레오 시스템에서의 음상 정위 특성 연구)

  • 한찬호;이법기;정원식;고일석;최영수
    • The Journal of the Korea Contents Association
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    • v.2 no.1
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    • pp.32-38
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    • 2002
  • In the AV system, stereophonic system has been studied to produce a realistic sound effect. The width of stereo AV system speakers is narrow, to have the spatial impression of sound effect, widening the sound image is necessary. The direction of sound image depends on the phase delay and the sound pressure level difference between two channels. In this paper, we analyze the relationship between the phase delay and the direction of the sound image relating to the frequency of sound source. Also we experimented to directionally localize the sound image of the pure tone with shifting phases and controling sound pressure love between two channels when the sound is reproduced by two speakers to make a spatial impression of sound effect.

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A Case Study of a Taeeumin Patient with Idiopathic Sudden Sensorineural Hearing Loss that accompanied with Tinnitus who was treated with Cheongsimyeonja-tang (청심연자탕으로 관리한 이명을 동반한 돌발성 난청 치험례)

  • Lee, Mi-Suk;Hwang, Mim-Woo;Kim, Yun-Hee
    • Journal of Sasang Constitutional Medicine
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    • v.23 no.3
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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.

The Clinical Study on 20 Cases with Sudden Sensorineural Hearing Loss in Korean Medical Hospital Last 3 Years (최근 3년간 돌발성 난청으로 한방병원에 입원한 환자 20례에 대한 임상적 고찰)

  • Hwang, Mi-Lee;An, Jae-Hyun;Jung, Hyun-A
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.30 no.3
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    • pp.182-192
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    • 2017
  • Objectives : The purpose of this study is to report 20 patients who have been diagnosed with sudden sensorineural hearing loss(SSNHL) in the Korean medical hospital for last 3 years. Methods : 20 patients who have been hospitalized with a SSNHL in Korean medical hospital from June 2014 to June 2017 were analyzed by reviewing the patients' charts. Results : In the study group, Pure tone audiometry was performed in 17 patients. 3 of them showed 'Marked improvement' in pure tone audiometry. And 6 of them showed 'Slight Improvement.' On the other hand, 9 of them showed 'No response' or even got worse. However, the symptoms accompanied with hearing loss like tinnitus, aural fullness, vertigo improved most of patients. Conclusions : This study shows that the Korean medical treatment is effective in the SSNHL.