Steganography is the science of communicating secret information which no one apart from the intended recipient can be aware of. Most researchers focus on the medium of image, video and audio, while text is paid less ...
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How to make full use of Web service and construct application by composing existing services on demand in the dynamic and open environment is a challenging issue. This paper proposes a user-centric business-user devel...
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In order to realize fast location and detection of abnormal status during running of industrial furnace, especially abnormal status of firing, this article studies and designs a fault diagnosis expert system based on ...
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Super-resolution image reconstruction is a technique to reconstruct high resolution image or video from a sequence of low resolution images. The super resolution method is summarized in this paper. The frequency domai...
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This paper analyzes the materials flow, information flow, payments flow and returned items flow of supply chain management firstly. Then the paper discusses the key supply chain management processes in SCOR (Supply Ch...
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Semantic recognition of sketch is a key research field in Pen-based Human-computer interaction. In this paper, we propose improved algorithms of sketch recognition: for a stroke with simple semanteme, we construct a q...
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Supercritical unit in a power plant, boiler system has a large delay, large inertia, etc., a control system using classical control strategy can not be a good conditioning effect, this use of fuzzy control with intell...
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A computer aided system is proposed to screen and sort the non-patent literatures in this paper. It is introduced that the present situation and strategy of screening in data processing. The system here is a man-machi...
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Switched Reluctance Motor used widely in the industrial field result with its excellent performance. This paper studies the closed-loop velocity control in SRM system, which based on TMS320F2812 DSP. The control algor...
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Spurred by the remarkable development of VoIP technology, applications of real-time voice communication has corne into widespread use over the Internet. However, their over reliance on PC environment restricts the app...
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ISBN:
(纸本)9781424472369
Spurred by the remarkable development of VoIP technology, applications of real-time voice communication has corne into widespread use over the Internet. However, their over reliance on PC environment restricts the applying fields of most VoIP software, and embedded VoIP is one of these blind spots. The VoIP application in this paper sets the hardware foundation on ARM9 embedded platform, adopts SIP and RTP as the transmission protocol and employs CELP compression algorithms to ensure the low-latency and high-quality communication. In addition, Linux operating system and ALSA device driver are used to meet the needs of cost control and sound effects. Viewed from the experimental results, the VoIP system proves to be successful in both its real time voice communication and overall capacity.
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