Design of a Digital Audio Player Based on μc/Os and μc/GUI

2013 ◽  
Vol 462-463 ◽  
pp. 650-653
Author(s):  
Shao Yuan Li
Keyword(s):  
High Speed ◽  
High Performance ◽  
Rapid Development ◽  
Digital Audio ◽  
Embedded Operating System ◽  
Audio Processing ◽  
Audio Technology ◽  
Machine Interface ◽  
Audio Decoder ◽  
Sd Card

At present, with the rapid development of digital audio technology, high speed and high performance digital audio processing technology faces an important issue. This paper proposes and designs a digital audio player combined with digital audio and embedded systems two cutting-edge technology. Hardware circuitry takes STM32F103VE as the main controller, configurated with VS1003 audio decoder chip and the corresponding SD card storage module, LCD module, power supply module and so on; software design transplants embedded operating system μC / OS. This paper takes advantage of μC/GUI to design audio player graphical user interface, improves the human-machine interface friendliness and aesthetics greatly.

High-Performance Embedded Technologies Improve Performance of Measuring and Testing Systems

2013 ◽  
Vol 718-720 ◽  
pp. 820-824
Author(s):  
Ju Guang Li ◽  
Hua Zhang
Keyword(s):  
Operating System ◽  
Power Consumption ◽  
High Performance ◽  
Rapid Development ◽  
Development Trend ◽  
Current Situation ◽  
Embedded Operating System ◽  
Improve Performance ◽  
Embedded Microprocessor ◽  
Testing Instruments

This paper introduces current situation and development trend of measuring and testing systems and impact on traditional measuring and testing instruments and devices caused by rapid development of embedded technologies represented by high-performance embedded microprocessor and embedded operating system technologies. To combine newly developed high-performance embedded technologies with traditional measuring and testing technologies can greatly improve performance, cost, power consumption and volume indexes of measuring and testing instruments, enabling them to obtain incomparable advantages over traditional instruments.

System of HD Digital Audio Decoder

2015 ◽  
Vol 743 ◽  
pp. 355-358
Author(s):  
Mang Zhou
Keyword(s):  
Data Stream ◽  
Digital Audio ◽  
System Construction ◽  
Audio Processing ◽  
Audio Data ◽  
Audio Decoder ◽  
Audio System

This paper describes a audio system for high-definition(HD)digital audio decoding solution. The system is well aligned to decoding audio data stream Dolby True HD,DTS HDMaster, and support advanced audio processing Pro Logic® IIx, DTS Neo6. Discuss focuses on system construction and management of audio process by host MUC.

The Effect of Equal-Channel Angular Extrusion to the Cast Aluminum Alloy Materials

2012 ◽  
Vol 203 ◽  
pp. 281-285
Author(s):  
Guo Ping Zhang
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
High Performance ◽  
Equal Channel Angular Extrusion ◽  
Rapid Development ◽  
Solid Solution Hardening ◽  
Modern World ◽  
High Tech ◽  
Cast Aluminum Alloy ◽  
Cast Aluminum

With the rapid development of modern world aerospace science and technology, hi-tech weaponry and high-speed transportation tools, industrial production and high-tech equipment manufacturers have increasingly urgent demand for high-performance metal materials. The cast aluminum is a new aluminum alloy series developed by foundry industry recently. Because it does not need the solid solution hardening process and has good mechanical properties, it's loved by the manufacturing sector. This paper targets at channel angular deformation direction to study the cast aluminum tissue material .

scholarly journals Can a natural singing voice be enhanced through digital processing? Implications of voice training and vocology in singers

2021 ◽  
Vol 3 (2) ◽  
pp. 72-86
Author(s):  
Junseo Cha ◽  
Seong Hee Choi ◽  
Chul-Hee Choi
Keyword(s):  
Digital Processing ◽  
Digital Audio ◽  
Voice Training ◽  
Singing Voice ◽  
Voice Pedagogy ◽  
Physiological Level ◽  
Audio Processing ◽  
Audio Technology ◽  
Recording Studios

Introduction. The traditional way of facilitating a good singing voice has been achieved through rigorous voice training. In the modern days, however, there are some aspects of the singing voice that can be enhanced through digital processing. Although in the past, the frequency or intensity manipulations had to be achieved through the various singing techniques of the singer, technology today allows the singing voice to be enhanced from the instruments within recording studios. In essence, the traditional voice pedagogy and the evolution of digital audio processing both strive to achieve a better quality of the singing voice, but with different methods. Nevertheless, the major aspects of how the singing voice can be manipulated are not communicated among the professionals in each field. Objective. This paper offers insights as to how the quality of the singing voice can be changed physiologically through the traditional ways of voice training, and also digitally through various instruments that are now available in recording studios. Reflection. The ways in which singers train their voice must be mediated with the audio technology that is available today. Although there are aspects in which the digital technology can aid the singer’s voice, there remain areas in which the singers must train their singing system in a physiological level to produce a better singing voice.

Improving Energy-Efficiency of Computational Grids via Scheduling

2011 ◽  
pp. 1836-1857
Author(s):  
Ziliang Zong ◽  
Xiaojun Ruan ◽  
Adam Manzanares ◽  
Kiranmai Bellam ◽  
Xiao Qin
Keyword(s):  
Energy Efficiency ◽  
Energy Conservation ◽  
Grid Computing ◽  
Energy Efficient ◽  
High Speed ◽  
High Performance ◽  
Large Scale ◽  
Rapid Development ◽  
Computational Grids ◽  
Grid Architecture

High performance Grid platforms and parallel computing technologies are experiencing their golden age because of the convergence of four critical momentums: high performance microprocessors, high-speed networks, free middleware tools, and highly increased needs of computing capability. We are witnessing the rapid development of computational Grid technologies. Dozens of exciting Grid infrastructures and projects like Grid-tech, Grid Portals, Grid Fora, and Commercial Grid Initiatives are being built all over the world. However, the fast growing power consumption of data centers has caused serious concerns for building more large-scale supercomputers, clusters, and Grids. Therefore, designing energy-efficient computational Grids to make them economically attractive and environmentally friendly for parallel applications becomes highly desirable. Unfortunately, most previous studies in Grid computing primarily focus on the improvement of performance, security, and reliability, while completely ignoring the energy conservation issue. To address this problem, we propose a general architecture for building energy-efficient computational Grids and discuss the potential possibilities for incorporating power-aware techniques to different layers of the proposed Grid architecture. In this chapter, we first provide necessary background on computational Grids, Grid computing, and parallel scheduling. Next, we illustrate the general Grid architecture and explain the functionality of different layers. Followed by that, we discuss the design and implementation details of applying the energy-efficient job-scheduling technique, which is called Communication Energy Conservation Scheduling (or CECS for short), to computational Grids. Finally, we present extensive simulation results to prove the improvement of energy-efficiency of computational Grids.

The Design and Implementation of Parallel Algorithm Accelerator Based on CPU-GPU Collaborative Computing Environment

2012 ◽  
Vol 529 ◽  
pp. 408-412 ◽  
Author(s):  
Fan Yang ◽  
Tong Nian Shi ◽  
Han Chu ◽  
Kun Wang
Keyword(s):  
High Speed ◽  
High Performance ◽  
Programming Model ◽  
Rapid Development ◽  
Collaborative Computing ◽  
Computing Environment ◽  
Internet Applications ◽  
Rich Internet Applications ◽  
Mixed Programming ◽  
Performance Results

With the rapid development of GPU in recent years, CPU-GPU collaborative computing has become an important technique in scientific research. In this paper, we introduce a cluster system design which based on CPU-GPU collaborative computing environment. This system is based on Intel Embedded Star Platform, and we expand a Computing-Node for it by connecting to high-speed network. Through OpenMP and MPI mixed programming, we integrate different algorithms meeting with the scientific computing and application computing by Master/Worker model and a software system which is based on RIA (Rich Internet Applications). In order to achieve high performance, we used a combination of software and hardware technology. The performance results show that the programs built with hybrid programming model have good performance and scalability.

Feature-Based Online Representation Algorithm for Streaming Time Series Similarity Search

2019 ◽  
Vol 34 (05) ◽  
pp. 2050010 ◽  
Author(s):  
Peng Zhan ◽  
Changchang Sun ◽  
Yupeng Hu ◽  
Wei Luo ◽  
Jiecai Zheng ◽  
...  
Keyword(s):  
Time Series ◽  
Big Data ◽  
Similarity Search ◽  
High Speed ◽  
High Performance ◽  
Time Series Data ◽  
Rapid Development ◽  
Feature Representation ◽  
Series Data ◽  
Data Points

With the rapid development of information technology, we have already access to the era of big data. Time series is a sequence of data points associated with numerical values and successive timestamps. Time series not only has the traditional big data features, but also can be continuously generated in a high speed. Therefore, it is very time- and resource-consuming to directly apply the traditional time series similarity search methods on the raw time series data. In this paper, we propose a novel online segmenting algorithm for streaming time series, which has a relatively high performance on feature representation and similarity search. Extensive experimental results on different typical time series datasets have demonstrated the superiority of our method.

Improving Energy-Efficiency of Computational Grids via Scheduling

2010 ◽  
pp. 519-542 ◽  
Author(s):  
Ziliang Zong ◽  
Xiaojun Ruan ◽  
Adam Manzanares ◽  
Kiranmai Bellam ◽  
Xiao Qin
Keyword(s):  
Energy Efficiency ◽  
Energy Conservation ◽  
Grid Computing ◽  
Energy Efficient ◽  
High Speed ◽  
High Performance ◽  
Large Scale ◽  
Rapid Development ◽  
Computational Grids ◽  
Grid Architecture

High performance Grid platforms and parallel computing technologies are experiencing their golden age because of the convergence of four critical momentums: high performance microprocessors, high-speed networks, free middleware tools, and highly increased needs of computing capability. We are witnessing the rapid development of computational Grid technologies. Dozens of exciting Grid infrastructures and projects like Grid-tech, Grid Portals, Grid Fora, and Commercial Grid Initiatives are being built all over the world. However, the fast growing power consumption of data centers has caused serious concerns for building more large-scale supercomputers, clusters, and Grids. Therefore, designing energy-efficient computational Grids to make them economically attractive and environmentally friendly for parallel applications becomes highly desirable. Unfortunately, most previous studies in Grid computing primarily focus on the improvement of performance, security, and reliability, while completely ignoring the energy conservation issue. To address this problem, we propose a general architecture for building energy-efficient computational Grids and discuss the potential possibilities for incorporating power-aware techniques to different layers of the proposed Grid architecture. In this chapter, we first provide necessary background on computational Grids, Grid computing, and parallel scheduling. Next, we illustrate the general Grid architecture and explain the functionality of different layers. Followed by that, we discuss the design and implementation details of applying the energy-efficient job-scheduling technique, which is called Communication Energy Conservation Scheduling (or CECS for short), to computational Grids. Finally, we present extensive simulation results to prove the improvement of energy-efficiency of computational Grids.

Experimental Study on Ultimate Strength of Novel Aluminum Alloy Stiffened Panel With Floating Girder

2021 ◽  
Author(s):  
Kun Sun ◽  
Genglin Zhang ◽  
Ling Zhu ◽  
Liang Xu ◽  
Kailing Guo ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Ultimate Strength ◽  
Uniaxial Compression ◽  
High Speed ◽  
High Performance ◽  
Rapid Development ◽  
Stiffened Panel ◽  
The Novel ◽  
Novel Structure ◽  
Collapse Behavior

Abstract With the rapid development of high-speed craft, the novel aluminum alloy stiffened panel with floating girder is widely used to achieve light weight ship hull for economic and high performance. While the mechanical properties of this novel structure are rarely studied. In order to investigate the differences of ultimate strength and collapse behavior between the novel aluminum stiffened panel with floating girder and fixed girder, the uniaxial compression experiments of novel aluminum stiffened panel with floating girder and fixed girder were conducted. Test apparatus were designed to accomplish simply supported boundary condition, then the uniaxial compression experiments were performed, eventually the ultimate strength and collapse behavior of different panels were analyzed. The results of the experiments show that the ultimate strength of novel aluminum stiffened panel with floating girder is higher than the panel with fixed girder under uniaxial compression, which means this type of novel aluminum alloy stiffened panel with floating girder applied on the high-speed craft can improve the ultimate strength of the vessel. Furthermore, it was witnessed that the collapse mode of stiffened panel with fixed girder is tripping of web while that of floating panel is bucking of girder.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

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