• 한국도서관정보학회지
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• 제32권1호
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• pp.125-150
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• 2001

The purpose of this study is to investigate the distinctiveness and problem areas in cataloging rules of sound recordings. In this study, therefore, the characteristics and kinds of sound recordings and the cataloging rules related to sound recordings in non-book cataloging rules are examined first as the backgrounds. Then the sources of information, general material designation, physical description, choice of headings, and uniform titles in ISBD(NBM)·AACR2R·AECT4 and KORMARC(NBM) are analyzed. And the special issues and some problems to be considered in cataloging of sound recordings are presented.

• The Journal of Advanced Prosthodontics
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• 제1권1호
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• pp.26-30
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• 2009

STATEMENT OF PROBLEM. Qualitative and semi-quantitative methods have been developed for TMJ sound classification, but the criteria presented are completely inhomogeneous. Thus, to develop more objective criteria for defining TMJ sounds, electroacoustical systems have been developed. We used Joint vibration analysis in the BioPAK system(Bioresearch Inc., Milwaukee, USA) as the electrovibratography. PURPOSE. The aim of this study was to examine the TMJ sounds with repect to frequency spectra patterns and the integral > 300 Hz /< 300 Hz ratios via six-months follow-up. MATERIAL AND METHODS. This study was done before and after the six-months recordings with 20 dental school students showed anterior disk displacement with reduction. Joint vibrations were analyzed using a mathematical technique known as the Fast Fourier Transform. RESULTS. In this study Group I and Group II showed varied integral > 300 /< 300 ratios before and after the six-months recordings. Also, by the comparative study between the integral > 300 /< 300 ratios and the frequency spectrums, it was conceivable that the frequency spectrums showed similar patterns at the same location that the joint sound occurred before and after the six-months recordings. while the frequency spectrums showed varied patterns at the different locations that the joint sound occurred before and after six-month recordings, it would possibly be due to the differences in the degree of internal derangement and/or in the shape of the disc. CONCLUSIONS. It is suggested that clinicians consider the integral > 300 /< 300 ratios as well as the frequency spectrums to decide the starting-point of the treatment for TMJ sounds.

• 대한한방내과학회지
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• 제36권3호
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• pp.276-283
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• 2015

Objectives: The purpose of this study is to report bowel sound patterns recorded in 3 diseases associated with structural deformity of the pylorus-duodenum. Methods: : Bowel sound recording is a useful non-invasive tool for the evaluation of gastrointestinal motility. However, the difficulty in manual attachment of the electronic stethoscope on the abdominal wall and noise production against bowel sound signals have prohibited its widespread use. Therefore, I developed a new apparatus that eliminates the noise; it contains a sound absorbing device and a holder for the head of stethoscope. Using the new bowel sound recording system, bowel sounds of the patients were recorded repeatedly. The endoscopic and abdominal computed tomography findings were obtained from other hospitals' medical record, and all patients were confirmed to have structural deformity in the pylorus-duodenum. The records of each patient were compared and assessed. Results: : Patients had either duodenal ulcer scar, pyloric stricture, or far advanced malignant stomach cancer, as diagnosed by the gastroscopy. Their dominant frequency of bowel sound obtained from the new system was checked more than 2 times at regular intervals. All 8 recordings in the 2 patients with duodenal ulcer scar (5 times) or pyloric stricture (3 times) showed a decrease in postprandial than fasting dominant frequency. One patient with stomach cancer showed no significant change between postprandial and fasting states at 2 recordings. Conclusions: The analysis of dominant frequency in bowel sounds can indicate the existence of pyloric obstruction that could delay gastric emptying.

• 소음진동
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• 제9권5호
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• pp.991-997
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• 1999

It is getting higher the demand on a good sound in a car. Like some other sensory qualities, achieving a good sound is still treated as a black-box followed by the individual taste of tuning engineers. This study aims to define the attributes of a good car audio sound and the assessment factors affecting the sound quality. With a variety of surveys on professional listening groups and car audio installers, 26 most frequently used vocabularies are selected as typical presentations of car audio sound quality. After repetitions of listening tests with deliberately selected test CD, pre-recorded 15 different digital car-recordings, headphones replay system, and three different listening groups, it is proved that there are at least 5 different assessment factors which significantly affect the car audio sound quality. They are high fidelity, spectral balance, tonal accuracy, sound stage and acoustic fault.

• 한국도서관정보학회지
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• 제38권3호
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• pp.425-454
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• 2007

이 연구는 한국 전통음악 녹음자료의 통일표제 기술원칙에 관한 모형안을 제시한 것이다. 주요부분을 중심으로 그 결과를 요약하여 보면 다음과 같다. 비악곡형식의 경우에는 구국악의 아악은 속명을, 민속악은 일반화된 표제를, 신국악은 작곡자가 최초로 표현한 원표제를 통일표제로 하여 각 괄호 속에 기입하되 식별적 요소를 제외하고는 연주수단 등을 생략한다. 그러나 기악곡의 악곡형식의 경우에는 악곡형식, 연주수단 축차번호, 작품번호, 조, 기타 한정어구나 설명구의 순으로 통일표제를 구성하여 각 괄호 속에 기술한다. 그리고 구국악의 성악곡 중 합창곡의 연주수단은 남성, 여성, 혼성합창으로만, 독창곡은 남성, 여성독창으로만 기술하고, 신국악은 양악의 형식을 따른다. 이 밖에 상이한 작품이 동일한 통일표 제를 가질 경우는 연주수단, 축차번호 조 한정어구나 설명구, 발행사명, 발행년 등을 부가하여 구별하도록 한다.

• 한국소음진동공학회논문집
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• 제20권5호
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• pp.427-436
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• 2010

The printer sound has many aspects which define its quality because the printer has lots of components and its operation is very complicated. These sound qualities are related to the international competition in printer markets. Recordings inside anechoic chamber were analyzed and a large number of sounds were stimulated using digital signal processing technique. First subjective tests of the printer sound were conducted using semantic different method. By applying factor analysis to the subjective response, two important factors of sound quality were extracted. Second subjective tests were conducted to evaluate the quietness and the impulsiveness of the printer sounds. On the other hand, sound metrics are calculated applying psychoacoustic theories. In this paper, the nonlinear relation between subjective evaluation and sound metrics was identified using artificial neural network and the printer sound quality index was developed. Later, subjective sound quality evaluation will be estimated and evaluated using this index.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 춘계학술대회
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• pp.252-255
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• 2016

심음은 가장 쉽게 추출, 보관이 가능하고 가장 빨리 심장 질환을 진단하는데 도움을 줄 수 있기에 많이 사용되고 있다. 심음은 청진, 전자 청진을 통하여 얻어지는데 질환의 판정을 위해서는 전문의 많은 경험에 의존하고 있고, 자동 진단을 위한 장비는 매우 고가이며, 이를 위하여 심음의 정량화 과정이 선행되어야 한다. 본 연구에서는 심음의 한 종류인 심잡음을 심장 질환 별로 추출하여 정량화하여 자동 진단에 도움을 주고자 하였다. 심잡음은 심잡음 에너지율을 계산하여 정량화에 이용하였다. 추출된 심잡음 에너지의 파워 스펙트럼은 심장 질환별로 분류 가능한 형태학적 특징을 나타내었다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.1142-1146
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• 2007

In this studies, subjective evaluation of heavy-weight floor impact sound through classification was conducted. Heavyweight impact sounds generated by an impact ball were recorded through dummy heads in apartment buildings. The recordings were classified according to the frequency characteristics of the floor impact sounds which are influenced by the floor structure with different boundary conditions and composite materials. The characteristics of the floor impact noise were investigated by paired comparison tests and semantic differential tests. Sound sources for auditory experiment were selected based on the actual noise levels with perceptual level differences. The results showed that roughness and fluctuation strength as well as loudness of the heavy-weight impact noise had a major effect on annoyance.

• Journal of information and communication convergence engineering
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• 제9권2호
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• pp.161-165
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• 2011

Recently, According to increasing interest to original sound Karaoke instrument, MIDI type karaoke manufacturer attempt to make more cheap method instead of original recoding method. Separating technique for singing voice from music accompaniment is very useful in such equipment. We propose a system to separate singing voice from music accompaniment for stereo recordings. Our system consists of three stages. The first stage is a spectral change detector. The second stage classifies an input into vocal and non vocal portions by using GMM classifier. The last stage is a selective frequency separation stage. The results of removed by listening test from the results for computer based extraction simulation, spectrogram results show separation task successfully. Listening test with extracted MR from proposed system show vocal separating and removal task successfully.

• International Journal of Naval Architecture and Ocean Engineering
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• 제4권4호
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• pp.374-385
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• 2012

The indoor noise of a ship is usually determined using the A-weighted sound pressure level. However, in order to better understand this phenomenon, evaluation parameters that more accurately reflect the human sense of hearing are required. To find the level of the satisfaction index of the noise inside a naval vessel such as "Loudness" and "Annoyance", psycho-acoustic evaluation of various sound recordings from the naval vessel was performed in a laboratory. The objective of this paper is to develop a single index of "Loudness" and "Annoyance" for noise inside a naval vessel according to a psycho-acoustic evaluation by using psychological responses such as Noise Rating (NR), Noise Criterion (NC), Room Criterion (RC), Preferred Speech Interference Level (PSIL) and loudness level. Additionally, in order to determine a single index of satisfaction for noise such as "Loudness" and "Annoyance", with respect to a human's sense of hearing, a back-propagation neural network is applied.