数字信号外文中英文翻译外文文献英文文献数字信号处理器简介.doc

Introduction to Digital Signal Processing Signal and digital signal processing as a branch of information processing, has infiltrated into the scientific research, technological development, industrial production, national defense and national economy in various fields has achieved fruitful results. Of the signal in time domain and transform domain analysis of the characteristics, processing, enable us to the nature of the signal features and a more clear awareness and understanding of the signals need to get our form of information of use to improve the extent, then in a broader and higher level the access to information. DSP chip, also known as digital signal processors, is particularly suitable for digital signal processing microprocessor. The emergence and development of DSP chips, digital signal processing technology for the improvement of many of the new system, the new algorithm came into being, the application field is expanding. Currently, DSP chips have been widely used in communications, automation, aerospace, military, medical and other fields. Digital signal processing is that the signal to digital form and deal with the theory and technology. Digital signal processing and analog signal processing is a subset of signal processing. The purpose of digital signal processing is a continuous real-world analog signals to measure or filter. Therefore needed before carrying out digital signal processing the signal from the analog domain into the digital domain, this is usually achieved through the ADC. The digital signal processing often have to transform the output to the analog domain, which is achieved through the DAC. The core digital signal processing algorithm is the discrete Fourier transform (DFT), is the DFT to the signal in the digital domain and frequency domain are realized discrete, general-purpose computer which can handle discrete signal. Er Shi digital signal processing theory to practical from the fast Fourier transform (FFT), FFT has si