• Title/Summary/Keyword: Digital Sound

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Development of portable game device with uncompressed HD video and high quality sound output (비압축 HD급 영상 및 고음질 음성 출력을 지원하는 휴대용 게임기 구현)

  • Lee, Chung-Hee;Lee, Jong-Hun;Jung, Woo-Young
    • Proceedings of the KIEE Conference
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    • 2006.10c
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    • pp.391-393
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    • 2006
  • In this paper, we develop a portable game device with uncompressed HD video and high quality sound output. Portable game devices support not only game function but also various complex functions recently. It especially supports TV-Out port to play realistic game, connecting a large screen display device. But the video and audio output signals of conventional TV-out port have the low performance and these signals are analog output. So, it is difficult that the users enjoy realistic game with benefit of high resolution digital TV. We propose the game device output with uncompressed digital signal, which has no delay of video/audio signal, also has strong immunity to external noise. Since it supports a high resolution video and high quality sound, users can playa realistic game. First, we implement the HDMI to the game device and we test reliability with the various resolutions video inputs and audio inputs. The proposed method can be applied multimedia devices requiring high performance output function as well as portable devices.

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A Study on the Effective Marketing Implementation through Face Recognition Technology in Smart Digital Signage

  • Cha, jin-gil;Kim, Seong-Kweon
    • International journal of advanced smart convergence
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    • v.11 no.3
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    • pp.72-78
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    • 2022
  • The aim of this research is to improve the effectiveness of digital media advertising because current advertisements -in digital signage - indiscriminately appeals to the general public rather than to a specific target. In order to deliver efficient and customized advertisement information, an IoT human body detection sensor mounted on digital signage detected human faces and then classified them firstly by gender. The digital signage here is a smart digital signage that can analyze facial signals, discriminate them based on patterns, and apply the extracted data by displaying the corresponding information to the user. In addition, by identifying the customer's location approaching the smart digital signage and displaying the optimized content information for the customer's location through an algorithm, the digital signage can dramatize the advertisement Thus, this is a study meant forimproving information efficiency while reducing noise and driving power waste generated from unnecessary digital information reproduction.

ON-LINE ESTIMATION PROCEDURES OF DIGITAL FILTER TYPE FOR REVERBERATION CHARACTERISTICS IN CLOSED ACOUSTIC SYSTEMS BASED ON NOISY OBSERVATION

  • Hiromitsu, Seijiro;Ohta, Mitsuo
    • Proceedings of the Acoustical Society of Korea Conference
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    • 1994.06a
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    • pp.680-685
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    • 1994
  • The acoustic phenomena in the actual sound systems involve a variety of compound problems. In this paper, the well-known Bayes' theorem is first employed and expanded into orthonormal and non-orthonomal series forms matched to the digital processing of lower and higher order statistical informations and the noisy observations. Proposed on-line algorithms of digital filter type are applied to the actual state estimation for a reverberation characteristics in a room under contamination of background noises.

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Consumption Attribute Value Estimation of Digital Music Contents Service by Conjoint Analysis (컨조인트 분석을 통한 디지털 음악콘텐츠 서비스의 소비 속성별 가치 추정)

  • Shin, Dong-Myoung;Kim, Bo-Young
    • The Journal of the Korea Contents Association
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    • v.14 no.12
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    • pp.924-934
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    • 2014
  • In the last 10 years the digital music contents market has grown rapidly. However digital music contents product and services are not managed with product planning and price policy considered customer attitude and digital music contents values. This study is to define the value properties of digital music contents services based on streaming and download as genre, price, sound quality, and usage appliance, and suggest the strategic market price and service composition of digital music contents service by customer attitudes about the value properties. The research used the conjoint analysis methodology based on the hedonic price model and collected 405 questionaries by users of Korean digital music contents services to the analysis. Hence 'sound quality' in download platform, and 'appliance' in streaming platform were the elements to evaluate the customer attitude. The results present the music contents productions and companies have to provide the differentiated services and price by the value properties of user preference in the market.

Tool Wear and Fracture Monitoring through the Sound Pressure in Turning Process (음압을 이용한 선삭작업에서의 마모, 파손 감시)

  • 이성일
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 1997.04a
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    • pp.82-87
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    • 1997
  • In order to make unmanned machining systems with satisfactory performances, it is necessary to incorporate appropriate condition monitoring systems in the machining workstation to provide the required intelligence of the expert. This paper deals with condition monitoring for tool wear and fracture during turning operation. Developing economic sensing and identification methods for turning processes, sound pressure measurement and digital signal processing technique are proposed. The validity of the proposed system is confirmed through the large number of cutting tests.

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The Analysis of Characteristics of GMAW using Sound Signal (음향 신호 분석에 의한 GMAW의 특성분석)

  • 조택동;양상민;양성빈
    • Proceedings of the KWS Conference
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    • 2002.05a
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    • pp.65-67
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    • 2002
  • The gas metal arc welding(GMAW) is regarded as one of the best candidate for welding automation in industrial joining application. It is important to monitor the weld quality for the high performance of weld automation. The measured analog signal is frequency analyzed by digital signal process method. In order to observe the welding phenomena and control welding condition, arc light, voltage, and current are measured at the same time. They are analyzed and compared with arc sound. for these experiments, a power source of constant voltage characteristics was used in the pure metal transfer mode.

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The Influences of Labor Organizations on the Post-production Quality with Concentration of Sound Workers' Cases (영화 후반작업에서 직능별 단체가 품질향상에 미치는 영향-음향인력의 사례를 중심으로 -)

  • Cho, Hyun-Il
    • Journal of Digital Convergence
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    • v.6 no.3
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    • pp.131-138
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    • 2008
  • The Film-making industry in Korea has significantly expanded during last decade. However, the development didn't necessarily mean there's improvement in terms of the quality of life for the film staffs. In post-production stages, especially, any workers involved in the production can get tremendous amount of mental pressure and stress due to the deadline. Thus, in this period, most labor issues are found and often ignored. In this research, compared to Hollywood, Korean domestic film industry will be analyzed with focus on labor organizations. Their role will be explored and examined in terms of improving the qualify of life as well as of the film itself.

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Qualitative Noise Characteristics of Rotating Polygonal Disk Applied to Digital Printer Systems (디지털 프린터에 적용되는 회전 다각형 디스크의 소음특성)

  • Jo, Jun-Hyeon;Kim, Hyeong-Chae
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.1425-1429
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    • 2007
  • Consumer's product selection measures are being shifted from the units' operational performance to overall performance. Low noise, low vibration, and low power consumption rate, etc. which used to be additional quality indices, now become vital performance factors. Especially, noise and vibration characteristics are being considered as equivalent to/or even more critical than operational performance in certain products such as office machines and home entertainment systems, which share the same space with human being's daily life. Therefore, noise reduction and sound quality improvement technology becomes an inevitable design issue for those applications. Qualitative noise characteristics of rotating polygonal disk applied to digital printer systems are presented. Overall sound pressure level change and tonal noise variation with respect to the geometrical properties of polygonal disk, operational speed, and others are briefly discussed based on experimental results.

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Qualitative Noise Characteristics of Rotating Polygonal Disk Applied to Digital Printer Systems (디지털 프린터에 적용되는 회전 다각형 디스크의 소음특성)

  • Jo, Jun-Hyeon;Kim, Hyeong-Chae
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.6
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    • pp.606-611
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    • 2008
  • Consumer's product selection measures are being shifted from the units' operational performance to overall performance. Low noise, low vibration, and low power consumption rate, etc. which used to be additional quality indices, now become vital performance factors. Especially, noise and vibration characteristics are being considered as equivalent to/or even more critical than operational performance in certain products such as office machines and home entertainment systems, which share the same space with human being's daily life. Therefore, noise reduction and sound quality improvement technology becomes an inevitable design issue for those applications. Qualitative noise characteristics of rotating polygonal disk applied to digital printer systems are presented. Overall sound pressure level change and tonal noise variation with respect to the geometrical properties of polygonal disk, operational speed, and others are briefly discussed based on experimental results.

A Study on the Zone Setting of Digital Distance Relay (디지털 거리계전기의 Zone 설정에 관한 연구)

  • Lee, Jae-Gyu;Jung, Chang-Ho;Jung, Byung-Tae;Ahn, Bok-Shin;Kim, Sok-Il
    • Proceedings of the KIEE Conference
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    • 1998.07c
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    • pp.946-948
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    • 1998
  • The distance relay is very important for transmission line protection. A quadrilateral zone shape is used mainly for a modern digital distance relay. The shape of quadrilateral is vendor specific. At the stage of design, the shape is determined considering all possible types of faults and diverse configurations of system. Also this type relay must be designed to avoid the operation by a sound phase at single-Phase-to-ground fault, by a sound phase at two-phase-to-ground fault. The effect of a source impedance and a load impedance is another important factor to design. In this paper, a reliable zone shape which is appropriate for the KEPCO's transmission system is provided.

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