机械专业外文文献翻译-外文翻译--DSP的发展、现况及其应用.doc

DSP Development, the Status and Its ApplicationDigital signal processing (DSP) is involves many disciplines and widely applies in the many domain emerging disciplines. DSP has two kinds of meanings: digital Signal Processing, Digital Signal Processor. We often say that what DSP refers to the digital signal processor. The Digital Signal Processors are suitable for to complete digital signal processing operation of the processor. Since the 1960s, with the computer and the information technologys’swift development,, the digital signal processing technologies has arisen at thehistoric moment and obtains the rapid development. In the past more thean 20 years,the digital signal processing has widely applied in the field of communiation and others.The digital signal processing uses the computer or the special-purpose handling equipment,carries om processing and so on fathering, transformation, filter, estimating, value, enhancement,compression,recognition by the digital form ,to lbtian the signal form which the piople need.The digital signal processing tskes the nemerous disciplines as the retionale, whose scope is extremely applied. For example, in mathematics domain,the calculus,the probability statistics,the stochastic process,the numerical analysis and so on.They are the digital signal processing basic tool and theyare relate to,the signal and the system,the cybernetics, the correspondence theory,the failure diagnosis and so on. Recently the emerging some disciplines,like the artificial intelligence, the pattern recognition, the neural networks and so on,are inseparable with the digital signal processing. It can be said that digital signal processing takes many classics system infos owm rationale,simultaneously causes itself to becone a seric\es if energing disciplines the rationale. The DSP is mainly applied in the digital signal processing,the siming to can satisfy the real-time signal processing,therefore it needs tbe digital signal processing operation executing quickly,therefore these have decided the DSP characteristic and the key technologies.The digital signal processing’s the key technologies:DSP contains multiplier,accumulator,special assress producer,the collar eopenses circulation and so on;rsises the processing spdd\\eed the key technologies:assembly line technology,parallel processing technology,very long instruction word,exceeding the allowed figure quantity technology,DMAts a kond of CPU.DSP and general CPU are also different,the biggest difference lies in:CPU isVon Nouma structure;whileDSP ts the data and the address space separated Harvard structure. The commercial programmable component which in the world is the first monolithic DSP chip must be the S2811 issued by AMI Corporation, 1979 which year US Intel Corporation issued 2920 is a DSP chip main milestone.These two kinds of chip interior does not have the monocycle multiplier which the modern DSP chip must have. In 1980, Japan's NEC Corp. launched μ PD7720 is the first of a multiplier of commercial DSP chips.After this, the most successful DSP chip works as the number US Texas Instruments Company (TI)a series of products. TI corporration succeeded in 1982 promotes its first generation of DSP chip TMS3210 and serial prlducts TMS32011,TMS320C10/C14/C15/C16?17 and so on,afterward has promoted second generation of DSPone adter another chip TMS32020,TMS320C25/C26/C28,THIRD GENERATION dsp CHIP TMD320C30/C31/C32,fourth generation of DSP chip TMS320C40/C44,fifth generation of DSP chip TMS320C5X/C54X,second generation of DSP chip advanced version TMS 320C2XX,collection piece of DSP chips in body’s hign performance DP chip TMD320C8X as well as present speed quickest sixth generation of DSP chip TMS320C62X/C67X and so on.TI the commonly used DSP chip induction will be three big series,namely:TMS320C2000 series (including TMS320C2X/2XX),TMS320C5000 series(including TMS320C5X/C54X),TMS320C6000 series(TMS320C62X/C67X).Now,TI Corporation’s a series of DSP chip product alread became noe in the world the most influt\ential DSP chip.TI Corporation also becomes the biggest DSP chip supplier and its DSP market chare occupies the world share nearly 50%.At present,the DSP processor by TI,AGERE,ADI and so on was still seized,the product is controlled the foreign big enterarise.At home the DSP manufacture are not many,but the main application product is DVD and the radio telephone and so on.Therefore the domestic DSP output value is not hign.But in the product application,te important DSP application product,like the mobile phone,the modem,personal computer and the communication domain application product,alluse the international big plant DSP solution.The DSP technology applies corner of our life,from military to civil,the aerospae to the production life.In the aerospace aspect, the DSP technology mainly used in the radar and sonar signal disposal.In the correspondence aspect, mainly used in the mobile phone, Voice Over IP, ADSL and HFC signalin。