• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.620-623
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• 2016

열차의 진로를 제어하는 선로전환기는 열차의 안정적인 주행에 있어서 매우 중요한 시설이다. 본 논문에서는 선로전환기의 작동 시 발생하는 소리 정보를 이용하여 선로전환기의 스트레스를 탐지하는 시스템을 제안한다. 먼저 제안하는 시스템은 선로전환기에 스트레스가 쌓인 상태의 소리 정보와 스트레스가 제거된 소리 정보를 수집한 후, 다양한 소리특징들을 추출한다. 추출된 특징들로 부터 t-test를 이용하여 유의성이 확보된 소리 특징 파마미터만을 최종 특징벡터로 선택한다. 마지막으로, 소리 특징 벡터를 입력으로 하는 이진 분류기인 SVM(Support Vector Machine)을 이용하여, 선로전환기의 스트레스 상태 여부를 실시간으로 탐지한다. 실제 테스트용 선로전환기에서 취득한 소리 정보 데이터 셋을 이용하여 본 논문에서 제안하는 시스템의 성능을 실험적으로 검증한다.

• Korean Journal of Environmental Biology
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• v.25 no.2
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• pp.94-99
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• 2007

To investigate the spatial distribution and daily calling pattern of the Gold-spotted pond frog, Rana chosenica, in Chungju city and Chungwon gun, Chungbuk province, Korea, we divided the study area into 226 plots with a $2{\times}2km^2$ plot on the map, of which we assigned 32 plots for monitoring populations. Call monitoring on whether the species are present or not were conducted for 5 minutes in between sunset and the midnight from at the end of May to July in 2006. Gold-spotted pond frogs were detected at least once four out of 32 plots. Using program Presence, we obtained site occupancy rate as 0.170 which was quite low compared with other species, while detection probability was 0.66 that propose at least three times to visit the monitoring site to confirm the absence of the frogs. The frogs were actively calling from 21:00 to 02:00, and the number of calling male was significantly and highly correlated with water temperature and humidity. This study shows the present status of the Gold-spotted pond frogs in Chungju city and Chungwon gun and we suggests various effective monitoring methods based on the this study.

• Proceedings of the Acoustical Society of Korea Conference
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• spring
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• pp.263-266
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• 2002

성덕대왕 신종은 771년도에 성덕대왕의 공적을 기리기 위해 34년간 주조(높이 3.663m, 최대지름 2.227m, 무게 18,900kg)하여 만든 세계적인 문화유산이다. 외형도 미려하지만 종소리는 천, 지, 인을 뒤흔드는 신비감을 갖추고 있다. 에밀레 종소리는 끊어질 듯 이어지는 소리, 애끓는 소리, 심금을 울리는 소리 등의 특징을 갖는데 끊어질듯 이어지는 소리는 맥놀이 현상으로 나타난다. 지금까지 맥놀이 현상의 규명에 대한 많은 연구가 있었다. 여기에는 우리 선조들이 750년경에 과학적 근거를 토대로 하여 응용이 가능하였음을 알 수 있다. 그러나 근래에 와서 웅장하고 신비로운 신금을 울리는 소리가 두드러지게 나오지 않는다. 결론적으로 근래의 낙후된 에밀레 종으로 인해서 변형된 종소리와 예전의 고유한 종소리를 분석하고 우리 민족의 지혜와 숨결이 스며있는 세계적인 문화유산인 에밀레 종소리 복원이 강구되어야 하며 과학적이고 체계적인 관리가 요구되어야 한다.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.585-590
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• 2007

최근 IT기술의 비약적인 발전과 더불어 사용자의 편의성을 극대화 시키는 웨어러블 컴퓨팅 기술이 주목을 받고 있다. 이러한 기술은 일반인뿐만 아니라 장애인들의 일상생활의 보조 도구에 활용되어 큰 도움이 될 것으로 예상된다. 본 논문에서는 시각 및 청각장애인을 위해 개발된 착용형 단말기들을 소개하고자 한다. 시각 장애인용 단말기인 SmartWand는 시각장애인용 지팡이에 부착하거나 손에 휴대할 수 있는 장치로, 시작장애인을 위한 보행 보조 및 색상과 명암 정보 인식 보조 기능을 갖춘 장치이다. SmarWand는 시각장애인이 보행 시 이용하는 기존의 지팡이로는 감지할 수 없는 전방의 장애물을 초음파 센서를 통해 탐지하여 촉각이나 음성으로 경고해주고, 물체의 색깔이나 주변의 밝기 정도를 측정하여 시각장애인에게 알려준다. 청각 장애인용 단말기인 SmarWatch는 손목에 착용하는 장치로서 아기 울음소리, 노크나 초인종 소리, 물 끓는 소리, 화재 경보 등 가정에서 발생하는 일상적인 소리를 인식할 수 있도록 해준다. SmartWatch는 입력 모듈의 마이크로 입력된 소리를 문선통신을 통해 컴퓨터로 전송한 후에 소리의 종류를 인식하고 적절한 제어신호를 다시 무선통신을 통해 전송받아 감지된 소리의 종류를 해당하는 진동과 시각정보로 표시해준다. 이런 착용형 단말기들을 통해 시각 및 청각 장애인의 일상 생활의 안정성과 편의성이 증대 되기를 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.673-676
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• 2018

4차 산업혁명이 도래하면서 정보 통신 기술 및 융합 기술의 발전에 힘입어 소리 데이터를 이용한 연구가 활발하게 진행되고 있다. 소리 데이터를 이용한 학술적 프로토타입 연구들을 실제 환경에서 운용하기 위해서는 소리 취득 시 발생하는 다양한 잡음 환경에서도 원시 데이터(raw data)에 근접한 정보를 취득할 수 있는 시스템의 강인함이 보장되어야 한다. 본 논문에서는 SEGAN(Speech Enhancement Generative Adversarial Network) 모델을 활용하여, 전처리 및 후처리 과정이 필요 없이 원시 데이터를 대상으로 하는 end-to-end 방식의 소리 음질 향상 시스템을 제안한다. 제안하는 시스템은, 축산업 분야의 돼지 호흡기 질병 소리 데이터를 이용하여 실험하였으며, 여러 가지 잡음 상황(인위적인 잡음, 실제 환경 잡음)에서 소리 음질이 개선됨을 실험적으로 검증하였다.

• Journal of the HCI Society of Korea
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• v.10 no.2
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• pp.5-11
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• 2015

Yoseong sound is one of the Piri's representative techniques including unique timbre of Korean traditional musical instrument. This paper presents the acoustic characteristics of Yoseong sound by analyzing the sound of Piri and suggests audio filters that make Yoseong sound from ordinary sound of the Piri.

• Journal of English Language & Literature
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• v.57 no.4
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• pp.675-693
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• 2011

In its restricted sense, 'sound poetry' refers to the poetic performance that rejects words and verbal meaning and instead foregrounds the aural materiality of poetry. Behind this seeking for materiality lies a quest for a 'language of presence,' which operates through a denial of signification toward an ideal of the Adamic tongue, a purely emotional and universal language. In the same light, it is argued that sound poetry is a unique and unrepeatable event devoid of meaning due to its directness to the body allowing no intervention of intellectual and semiotic process. But language may involve perceptual meaning as well as verbal or conceptual meaning ascribed to words. This implies that even though devoid of conceptual meaning by means of using grammatically non-articulated sounds, sound poetry cannot but have meaning whose articulation is differently, i.e., iconically made about the aural features of the sounds. Perceptual meaning is unavoidable because everything we are conscious of is a reduced form, a repeatable pattern that works as a sign. 'Language of presence' is then actually impossible, and therefore sound poetry should be seen rather as a fest of diverse perceptual meanings.

• (The) Research of the performance art and culture
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• no.43
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• pp.325-356
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• 2021

This study is to analyze the current status of transmission and musical characteristics of Naeseo-deulilsori in Changwon, and the purpose of this study is to illuminate the value of deulilsori in Naeseo region, so that it can be continuously inherited. Naeseo-deulsori consists of the Mosimgi-sori, Nonmaegi-sori, and Chingchingi-sori. Mosimgi-sori, which is called when planting a seedling, is divided into 6 types according to the order and situation of work. ① rice planting sound, ② rice planting sound called in the morning, ③ rice planting sound called at lunch time, ④ rice planting sound called after lunch, ⑤ rice planting sound called when it is raining or cloudy, ⑥ rice planting sound called at sunset. Mosimgi-sori, which is called when planting a seedling, is based on Menali-tori, but partly influenced by Yugjabaegi-tori. However, it was typical Menali-tori in the slow The sound of rice planting in the nearby Haman region, but as the speed increased in the fast The sound of rice planting, the characteristics of Menali-tori faded and la↘mi perfect fourth descending frequently appeared. In the sound of rice planting in Goseong, both slow and fast sounds were strongly influenced by Yugjabaegi-tori. In the end, the sound of rice planting in the Naeseo region is less Yugjabaegi-tori than in the Goseong region and stronger than in Haman region. This combination of tori is a musical bargaining phenomenon that appears in the border region, and it can be said to be a geographical and regional characteristic of the Naeseo region. Nonmaegi-sori has the same sound as 'Sangsadeio' throughout the nearby Goseong and Haman regions. However, in Nonmaegi-sori in the Naeseo region, a strong Gyeong-tori tendency is found in the sound received. Looking at the flow of the melody of Nonmaegi-sori, it seems that the pitch has been changed by the intestines in recent years, and this modified melodic form has continued as it is. In order to guarantee locality, this part seems to need to be corrected in the future.

• Journal of Animal Environmental Science
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• v.6 no.2
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• pp.121-130
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• 2000

Pure voice characteristics of sow were analyzed to predict parturition time. These were analyzed by using oscilloscope and Sound Forge and the results showed that the voice frequency and amplitude of sow were in the range of 30∼2,500Hz and -35∼-75dB. According to the sound analysis results, the frequencies of sound appearance from farrowing sow in the farrowing pen for three days prior to delivery day and eight hours of prior to delivery day and eight hours of prior to time were around 85% and 46%, respectively of the total appearance during eight days to delivery. Forecasting of delivery time of farrowing sow using the number of sound occurrences showed a promising result such that those have been increased whenever the delivery time was approached. The forecasting success rates were 100% for both of one day and six hours prior to the actual delivery.

• Science of Emotion and Sensibility
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• v.9 no.2
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• pp.133-140
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• 2006

In order to investigate the sensation of the fabric sound simulating the real wear-condition, the fabric sound simulator using reciprocating friction was developed. Fabric sounds from 5 specimen were generated by the fabric sound simulator and recorded using high performance microphone. Physical sound parameters of fabrics including level pressure of total sound (LPT), level range (${\Delta}L$), and frequency differences (${\Delta}f$) were calculated. For psychological evaluation, seven adjectives for sound (softness, loudness, sharpness, clearness, roughness, highness, and pleasantness) were used as the semantic differential scale. Fabric sounds by reciprocating friction of nylon taffeta and polyester leno had the highest value of LPT and evaluated as loud, sharp, rough, and unpleasant while polyester ultra suede and silk crepe de chine haying the lower LPT and ${\Delta}f$ were perceived as soft and quite. Comparing with fabric sound by one-way friction, fabric sound by reciprocation friction was perceived as more sharp, loud, and rough. LPT was also the most important factor affecting the sensation of the fabric sound by reciprocating friction.