• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.597-599
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• 2021

As the number of successful business design innovation product cases increases, interest in design innovation is increasing. This study aims to examine how the design innovation (functionality, ergonomics, aesthetics) of Bluetooth speaker products affects the customer's preference and purchase intention. It proposes a research model through rational behavior theory (TRA) and technology acceptance model (TAM) for empirical research. The questionnaire is composed of questions to understand the influence of design innovation, favorability, and purchase intention. This is a study to increase the possibility of success of design innovation products by examining how design innovation through research results affects customer preference and purchase intention.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.41-55
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• 2021

AI voice speaker has played an important role in forming an early market and development for AI-based goods and service with growing attention from many people. In this context, this research examined factors affecting continuous intention of AI voice speaker based on the integrated adoption model, which combined two factors of perceived playfulness and innovation resistance with extended technology acceptance model. It was also examined whether three perceived anthropomorphic features(i.e., perceived rational support, perceived intimacy, perceived cognitive openness) have influences on continuous intention of AI voice speaker. The data was collected by an online-survey and were responses of those who are in their 20s and 30s and have experienced in using AI voice speaker. They were analyzed by using SEM(Structural Equation Modeling). The results showed that all of perceived ease of use, perceived usefulness, perceived playfulness and innovation resistance had significant influences on continuous intention of AI voice speaker. In addition, all of perceived rational support, perceived intimacy and perceived cognitive openness as perceived anthropomorphic features had significant influences on perceived ease of use, perceived usefulness and perceived playfulness. The implications of found results in this research was also discussed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.2
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• pp.228-233
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• 2021

As the number of successful design innovation product cases in business increases, interest in design innovation is increasing. This study aims to examine how the design innovation (functionality, ergonomics, aesthetics) of Bluetooth speaker products affects the customer's preference and purchase intention. It proposes a research model through rational behavior theory (TRA) and technology acceptance model (TAM) for empirical research. The questionnaire was composed of questions to understand the influence of design innovation, favorability, and purchase intention. As a result of the study, functionality, ergonomics, and aesthetics influenced product preference and purchase intention. In order for the innovative product of Bluetooth speaker design to be accepted in the early market, it is most important to form a positive attitude toward favorability centering on function and aesthetics. Favorability is a factor that has the most decisive influence on the purchase intention of design innovation products, and companies must discover and reinforce various factors that positively affect the preference.

• Journal of the Korea Convergence Society
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• v.12 no.7
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• pp.193-205
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• 2021

The AI speaker market is growing steadily. However, the satisfaction of actual users is only 42%. Therefore, in this paper, we collected reviews on Amazon Echo Dot 3rd and 4th generation models to analyze what hinders the user experience through the topic changes and emotional changes of each generation of AI speakers. By using topic modeling analysis techniques, we found changes in topics and topics that make up reviews for each generation, and examined how user sentiment on topics changed according to generation through deep learning-based sentiment analysis. As a result of topic modeling, five topics were derived for each generation. In the case of the 3rd generation, the topic representing general features of the speaker acted as a positive factor for the product, while user convenience features acted as negative factor. Conversely, in the 4^th generation, general features were negatively, and convenience features were positively derived. This analysis is significant in that it can present analysis results that take into account not only lexical features but also contextual features of the entire sentence in terms of methodology.

• The Optical Journal
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• s.111
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• pp.67-69
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• 2007

디지털 컨버젼스의 도래와 함께 자동차시장에도 카메라를 장착한 자동차들이 몰려오고 있다. 최근 자동차용 후방카메라를 개발.판매하는 회사가 급속히 증대하고 있다. 적외선 후방 카메라 및 차량 스피커 연동 후방 감지기 등의 개발.보급으로 자동차와 가정안전/보안 관련 제품이 쏟아지고 있다. 특히 최근에는 최대 $170^{circ}$의 광각을 제공하기도 하고 기존 고정식 주차경로 표시장치의 한계를 뛰어 넘은 변동 맞춤식 주차경로 표시장치의 출시로 업계의 파란을 일으키고 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.449-452
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• 2018

최근 AI 스피커를 비롯한 지능형 비서 서비스들이 빠르게 등장하고 있으며, AI 시장에서도 특히 챗봇 구축이 가장 활발하게 진행되고 있다. 건국봇은 건국대학교 학생들에게 필요한 정보를 제공하는 대화형 서비스이다. 본 논문에서는 대표적인 챗봇 구현 방법인 검색모델과 생성모델의 장단점을 분석하고, 건국봇에 적용한 사례를 소개한다. 궁극적으로, 질의문의 의도를 단어의 가중치를 고려해 추론함으로써 Unknown 추론을 강화하고 의도되지 않은 문장의 처리 관점에서 성능을 향상시키는 방법을 제안한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.11
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• pp.2311-2316
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• 2009

Lately, in the automotive market appeared keywords such as convenience, safety in presentation and increase importance of pan of vehicle. Accordingly, the use of many electronic devices was required essentially and communication between electronic devices is being highlighted. Various devices such as controllers, sensors and multimedia device(audio, speakers, video, navigation) in-vehicle connected car network such as CAN, MOST. Modem in-vehicle network managed and operated as purpose of each other. In this Paper, intelligent car navigation considering convenience and safety implement on MOST Network and present system to control CAN Network in vehicle.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.82-85
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• 2009

Lately, in the automotive market appeared keywords such as convenience, safety in presentation and increase importance of part of vehicle. Accordingly, the use of many electronic devices was required essentially and communication between electronic devices is being highlighted. Various devices such as controllers, sensors and multimedia device(audio, speakers, video, navigation) in-vehicle connected car network such as CAN, MOST. Modern in-vehicle network managed and operated as purpose of each other. In this Paper, intelligent car navigation considering convenience and safety implement on MOST Network and present system to control CAN Network in vehicle.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2013.06a
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• pp.8-11
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• 2013

스테레오-멀티채널 업믹스(Stereo-to-Multichannel Upmix)기술은 시장의 대부분을 차지하는 스테레오 음원을 홈시어터와 같은 멀티채널 스피커 재생 환경에서 효과적으로 재생하기 위한 채널 포맷 변환 기술을 말한다. 수평적인 공간감뿐만 아니라 수직적인 공간감을 재현하기 위하여 10.2, 22.2채널 환경의 경우 고도 채널이 추가되었다. 본 논문에서는 이러한 채널 환경에서 수직, 수평적인 공간감을 재현하기 위하여 새로운 초기 반사음을 생성하는 알고리즘을 제안하였다. 제안된 알고리즘은 진폭 패닝방법을 이용하여 전방의 가상 음원들에 의하여 발생되는 리시버 위치에서의 음압을 일치시킴으로써 기존 알고리즘이 가지지 못했던 이론적인 배경을 갖는다. 청취 평가 실험을 통하여 제안된 알고리즘은 음장의 수직, 수평적인 폭을 증가시키며, 좀 더 안정적인 음상 정위 성능을 가지는 것을 확인하였다.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.539-549
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• 2024

This study employed text mining techniques like frequency analysis, word clouds, and LDA topic modeling to assess consumer satisfaction and dissatisfaction with Hyundai Motor Company in the Chinese market, compared to brands such as Toyota, Volkswagen, Buick, and Geely. Focusing on compact vehicles from these brands between 2021 and 2023, this study analyzed customer reviews. The results indicated Hyundai Avante's positive factors, including a long wheelbase. However, it also highlighted dissatisfaction aspects like Manipulate, engine performance, trunk space, chassis and suspension, safety features, quantity and brand of audio speakers, music membership service, separation band, screen reflection, CarLife, and map services. Addressing these issues could significantly enhance Hyundai's competitiveness in the Chinese market. Previous studies mainly focused on literature research and surveys, which only revealed consumer perceptions limited to the variables set by the researchers. This study, through text mining and comparing various car brands, aims to gain a deeper understanding of market trends and consumer preferences, providing useful information for marketing strategies of Hyundai and other brands in the Chinese market.