• 한국소음진동공학회논문집
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• 제17권7호
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• pp.611-616
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• 2007

This study aims to clarify differences among the responses of users depending on variations in audio-visual landscape elements used to create amenities in residential areas. For the purpose, a laboratory experiment was performed to evaluate the emotions of subjects. As a result of subjective evaluation, it was found that the emotions of subjects were more significantly promoted in providing both sounds and images at the same time, than in providing images alone. In addition, as a result of comparing the variables of relativistic energy alpha waves have by measuring their brain waves, it was seen that alpha waves increased when providing harmonious sound sources with images, except for specific sound sources. Thus, it is considered that provision of sound sources capable of promoting human emotions can contribute greatly to improving the value of space for the sake of comfortable housing environment.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.519-522
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• 2007

This study aims to clarify differences among the responses of users depending on variations in audio-visual landscape elements used to create amenities in residential areas. For the purpose, a laboratory experiment was performed to evaluate the emotions of subjects. As a result of subjective evaluation, it was found that the emotions of subjects were more significantly promoted in providing both sounds and images at the same time, than in providing images alone. In addition, as a result of comparing the variables of relativistic energy alpha waves have by measuring their brain waves, it was seen that alpha waves increased when providing harmonious sound sources with images, except for specific sound sources. Thus, it is considered that provision of sound sources capable of promoting human emotions can contribute greatly to improving the value of space for the sake of comfortable housing environment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권12호
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• pp.5936-5954
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• 2018

Eight out of the top ten the largest technology companies in the world are involved in some way with the coming mobile VR revolution since Facebook acquired Oculus. This trend has allowed the technology related with mobile VR to achieve remarkable growth in both academic and industry. Therefore, the importance of reproducing the acoustic expression for users to experience more realistic is increasing because auditory cues can enhance the perception of the complicated surrounding environment without the visual system in VR. This paper presents a audio downmixing system for auralization based on hardware, a stage of sound rendering pipelines that can reproduce realiy-like sound but requires high computation costs. The proposed system is verified through an FPGA platform with the special focus on hardware architectural designs for low power and real-time. The results show that the proposed system on an FPGA can downmix maximum 5 sources in real-time rate (52 FPS), with 382 mW low power consumptions. Furthermore, the generated 3D sound with the proposed system was verified with satisfactory results of sound quality via the user evaluation.

• International Journal of Internet, Broadcasting and Communication
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• 제13권4호
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• pp.11-21
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• 2021

The causes of noise generation according to the classification of indoor spaces are very diverse. Individual happiness is infringed by this noise. In this paper, We tried to visualize the spatial sound characteristics of public places using sound color to express them so that anyone can sympathize. The noise inside a conference room of a medical device company was measured for 100 minutes, and the frequency band was divided into three different types of existing sound pressure expression units. Because the size of the noise is expressed differently depending on the situation, There are cases where there is a difference of opinion between the measurer and the researcher. This noise measurement experiment was conducted, and the sound color was applied to classify it on a log scale considering auditory characteristics. As a result of comparing this with the result expression for different loudness expression units, A specific table in different units yielded almost similar results. In addition, the sound source section for 100 minutes was divided into three analysis sections, the analysis sections were different, and the size of the energy ratio for each analysis section was divided in the form of an envelope. The characteristics of the low-frequency region of the space have a high energy ratio, and the decrease in the energy ratio according to the increase in frequency is constant and regular. You can see that conversations are possible.

• 한국인터넷방송통신학회논문지
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• 제21권3호
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• pp.59-66
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• 2021

인간은 오감 (시각, 청각, 후각, 촉각, 미각) 중 시각 및 청각 정보를 위주로 사용하여 주변 물체를 인식한다. 최신의 객체 인식과 관련한 주요 연구에서는 주로 이미지센서 정보를 이용한 분석에 초점이 맞추어져 있다. 본 논문에서는 다양한 chirp 오디오 신호를 관측공간에 방출하고 2채널 수신센서를 통해 echo를 수집하여 스펙트럼 이미지로 변화시킨 후 딥러닝을 기반으로 이미지 학습 알고리즘을 이용하여 3D 공간상의 객체 인식 실험을 진행하였다. 본 실험은 무향실의 이상적 조건이 아닌 일반적인 실내 환경에서 발생하는 잡음 및 echo가 있는 환경에서 실험을 진행하였고 echo를 통해 객체 인식률을 83% 정확도로 물체의 위치 추정할 수 있었다. 또 한 추론 결과를 관측공간과 3D Sound 공간 신호로 mapping 하여 소리로 출력하여 3D 사운드의 학습을 통해 소리를 통한 시각 정보를 얻을 수 있었다. 이는 객체 인식 연구를 위해서 이미지 정보와 함께 다양한 echo 정보의 활용이 요구된다는 의미이며 이런 기술을 3D 사운드를 통한 증강현실 등에 활용 가능할 것이다.

• 융합신호처리학회논문지
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• 제16권2호
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• pp.35-39
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• 2015

Auditory and visual stimuli presented in the peripheral visual field were perceived as spatially coincident when the auditory stimulus was presented five to seven degrees outwards from the direction of the visual stimulus. Furthermore, judgments of the perceived distance between auditory and visual stimuli presented in the periphery did not increase when an auditory stimulus was presented in the peripheral side of the visual stimulus. As to the origin of this phenomenon, there would seem to be two possibilities. One is that the participants could not perceptually distinguish the distance on the peripheral side because of the limitation of accuracy perception. The other is that the participants could distinguish the distances, but could not evaluate them because of the insufficient experimental setup of auditory stimuli. In order to confirm which of these two alternative explanations is valid, we conducted an experiment similar to that of our previous study using a sufficient number of loudspeakers for the presentation of auditory stimuli. Results revealed that judgments of perceived distance increased on the peripheral side. This indicates that we can perceive discrimination between audio and visual stimuli on the peripheral side.

• 한국멀티미디어학회논문지
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• 제10권12호
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• pp.1687-1697
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• 2007

Paik Nam-June is known as a Video Artist. Video is a presentation tool with the feature of recordability. However, it is not only a video which has been applied as an art presentation tool by him. Nevertheless, the existing researches fail to notice the aesthetic concept which is shown as the rest contents or forms, as they focus on the media features of Paik Nam-June's video. Therefore, this article aims at contemplating the art world of Paik Nam-June with its contents as 'visualization of music' and its form as 'hypermediacy' Therefore, 1. Sound is shown as the visualization of music, with the direct influence of absolute hollowness and noise of John Cage, originated from Zen Buddhism, while the foundation of it is known to be from the liberation of dissonance of Arnold Schoenberg and creative impromptu of shamanic sound. 2. The from of TVs influence of the orchestra, originated from Culture of a dining table in Korean. and indicated hypermediacy 3. Paik Nam-June indicated 'Text-interpretation' us to text analytics of 'how to read', rather than the question of 'what to tell' by intermedia as the visualization of music & hypermediacy.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1998년도 춘계학술대회 논문집
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• pp.310-315
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• 1998

This study includes noise automatic inspection system for washing machine auto-transmission one of modern home necessary. We effort to find and certificate sound noisesource by sound power and sound intensity, and apply to frequency analysis in vibration related sound noise. Still more we have been studying to data acquisition and programming for MS VisualBasic version 5.0. System component is below. 1) Pentium PC for data acquisition. 2) DSO for noise acquisition. 3) S/W for comparison and decision. 4) I/F Board for data communication. Wave form data through the DSO are converting to ASCII code data. The ASCII code through binary converting S/W are to be decision fitness or the badness comparison S/W. Finally, we will making noise monitoring system and automatic inspection system.

• 영어어문교육
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• 제13권2호
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• pp.129-153
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• 2007

When English language teachers are deciding on their priorities for teaching pronunciation, it is imperative to know what kind of differences and errors are most likely to interfere with communication, and what special problems particular first-language speakers will have with English pronunciation. In other words, phoneme discrimination skill is an integral part of speech processing for the EFL learners' learning to converse in English. Training using sound visualization technique can be effective in improving second language learners' perceptions and productions of segmental and suprasegmental speech contrasts. This study assessed the efficacy of a pronunciation training that provided visual feedback for EFL learners acquiring pitch and durational contrasts to produce and perceive English phonemic distinctions. The subjects' ability to produce and to perceive novel English words was tested in two contexts before and after training; words in isolation and words in sentences. In comparison with an untrained control group, trainees showed improved perceptual and productive performance, transferred their knowledge to new contexts, and maintained their improvement three months after training. These findings support the feasibility of learner-centered programs using sound visualization technique for English language pronunciation instruction.

• 한국생산제조학회지
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• 제9권6호
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• pp.9-18
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• 2000

This study includes noise automatic inspection system for washing machine auto-transmission one of modern home necessary. We effort to find and certificate sound noise source by sound power and sound intensity, and apply to frequency analysis in vibration related sound noise. still more we have been studying to data acquisition and programming for MS VisualBasic version 5.0. System component is below. 1) Pentium PC or data acquisition. 2) DSO for noise acquisition. 3)S/W for comparison and decision. 4) I/F Board for data communication. Wave form data through the DSO are converting to ASCII code data. The ASCII code through binary converting S/W. Finally we will making noise monitoring system and automatic inspection system.