A real-time and simultaneous processing system with 8 analog inputs is designed. The system is based on the development of Texas Instrument TMS320VC5510 DSK kit. The analog input signals are converted into digital ones by 8 bit ADC module using ADC0809. The ADC module interfaces to the DSP in parallel, through the DSP’s Memory Expansion Connector. The measurement with standard input signals fom FUNCTION GENERATOR LG1311 is also reported.
Cùng nắm kiến thức trong tài liệu "CCS4 DSP Workshop" thông qua việc tìm hiểu các nội dung sau: giới thiệu về DSP development kit, cài đặt môi trường thí nghiệm cho kit DSP DSK6416, các bài thí nghiệm DSP trên kit DSK6416.
DSP Development System
• • •
Testing the software and hardware tools with Code Composer Studio Use of the TMS320C6711 DSK Programming examples to test the tools
Chapter 1 introduces several tools available for digital signal processing (DSP). These tools include the popular Code Composer Studio (CCS), which provides an integrated development environment (IDE); the DSP starter kit (DSK) with the TMS320C6711 ﬂoating-point processor onboard and complete support for input and output. Three examples are included to test both the software and hardware tools included with the DSK.
Digital Signal Processing Development System
Use of the TMS320C31 DSK Testing the software and hardware tools such as the debugger Programming examples in C and TMS320C3x code to test the tools Chapter 1 introduces several tooals available for digital signal processing (DSP). These tools include the TMS320C31-based DSP Starter Kit (DSK) with complete input and output support. Three examples are included to illustrate these development tools and, in particular, to test the DSK.
Java offers several beneﬁts that could facilitate the use of wireless Personal Digital Assistants (WPDAs) for the user. First, Java is portable, and that means that it is independent of the hardware platform it runs on, which is very important for reducing the cost of application development. As Java can be run anywhere, the development of applications can be done on a desktop without the need of a real hardware platform.
The increasing demand for communications services and the desire for increased data throughput in modern communications systems has fueled research and development into the use of adaptive antenna arrays. Since frequency bandwidth is in short supply and is expensive to acquire, the ability to separate users based on their spatial parameters is very attractive for wireless networks. Adaptive antenna arrays offer the ability to increase the Signal-to-Noise Ratio (SNR) of a wireless communication link while at the same time permit the cancellation and removal of co-channel interference. ...
The Fast Fourier Transform
It is difficult to overstate the importance of the FFT algorithm for DSP. We have often seen the essential duality of signals in our studies so far; we know that exploiting both the time and the frequency aspects is critical for signal processing. We may safely say that were there not a fast algorithm for going back and forth between time and frequency domains, the field of DSP as we know it would never have developed. The discovery of the first FFT algorithm predated the availability of hardware capable of actually exploiting it. ...
The reader is provided with information on how to choose between the techniques and how to design a system that takes advantage of the best features of each of them. Imminently practical in approach, the book covers sampled data systems, choosing A-to-D and D-to-A converters for DSP applications, fast Fourier transforms, digital filters, selecting DSP hardware, interfacing to DSP chips, and hardware design techniques. It contains a number of application designs with thorough explanations.
TÓM TẮT: Nội dung bài báo là thiết kế hệ thống trên một linh kiện logic khả trình (FPGA) dùng cho các ứng dụng xử lý ảnh thời gian thực. Để thực hiện điều này, chúng tôi thiết kế một số bộ gia tốc (Accelerator) để tăng tốc độ xử lý kết hợp với một số kỹ thuật xử lý đặc biệt (như truy xuất bộ nhớ trực tiếp – DMA, nhiều Master…).
Nội dung bài báo là thiết kế hệ thống trên một linh kiện logic khả trình (FPGA) dùng cho các ứng dụng xử lý ảnh thời gian thực. Để thực hiện điều này, chúng tôi thiết kế một số bộ gia tốc (Accelerator) để tăng tốc độ xử lý kết hợp với một số kỹ thuật xử lý đặc biệt (như truy xuất bộ nhớ trực tiếp – DMA, nhiều Master…). Kết quả được thử nghiệm trên DSP Development Kit sử dụng FPGA Stratix EP2S60F1020C4 của hãng Altera  dùng các phần mềm SoPC Builder,...
1.1 Signals and Information 1.2 Signal Processing Methods 1.3 Applications of Digital Signal Processing 1.4 Sampling and Analog−to−Digital Conversion
ignal processing is concerned with the modelling, detection, identification and utilisation of patterns and structures in a signal process.
Digital filters, together with signal processing, are being employed in the new technologies and information systems, and are implemented in different areas and applications. Digital filters and signal processing are used with no costs and they can be adapted to different cases with great flexibility and reliability. This book presents advanced developments in digital filters and signal process methods covering different cases studies.
14.1 14.2 14.3 14.4 14.5 14.6 14.7 Introduction: Acoustic and Hybrid Echoes Telephone Line Hybrid Echo Hybrid Echo Suppression Adaptive Echo Cancellation Acoustic Echo Sub-band Acoustic Echo Cancellation Summary
cho is the repetition of a waveform due to reflection from points where the characteristics of the medium through which the wave propagates changes. Echo is usefully employed in sonar and radar for detection and exploration purposes. In telecommunication, echo can degrade the quality of service, and echo cancellation is an important part of communication systems.
The Verilog hardware description language (HDL) provides the ability to
describe digital and analog systems. This ability spans the range from
descriptions that express conceptual and architectural design to detailed
descriptions of implementations in gates and transistors. Verilog was
developed originally at Gateway Design Automation Corporation during the
mid-eighties. Tools to verify designs expressed in Verilog were implemented
at the same time and marketed. Now Verilog is an open standard of IEEE
with the number 1364.
Experts in every field of study depend on specialized tools. In the case of speech research and
development, the dominant tools today are computer programs. In this article, we present an
overview of key technical approaches and features that are prevalent today.
We restrict the discussion to software intended to support R&D, as opposed to software for commercial
applications of speech processing. For example, we ignore DSP programming (which is
discussed in the previous article). Also, we concentrate on software intended to support the special-...
Dual-specificity phosphatases (DSPs) constitute a subfamily of protein
tyrosine phosphatases (PTPs) that dephosphorylates phospho-Tyr, phos-pho-Ser and nonproteinaceous substrates. DSPs are involved in the regula-tion of both developmental and postnatal essential processes, such as early
embryogenesis, placental development and immune responses.