數(shù)字信號處理導(dǎo)論1緒論-wenkub.com
2025-05-11 05:59 本頁面
【正文】 轉(zhuǎn)換速度決定了其A/D芯片的最大抽樣速度，目前市售的 A/D芯片的抽樣速度可由幾十千赫至幾百兆赫。()xt()xt()sx nT()sy nT()yt A/D芯片已高度集成化，將這些芯片配以一些必要的外圍電路可做成不同的 A/D板（又稱數(shù)據(jù)采集板）。 3. I EEE Trans. on Biomedical Engineering。 下面是幾點(diǎn)特殊的要求： （ 1） 特別要注意加深概念的理解 ， 不要只停留在死記數(shù)學(xué)公式上； （ 2） 通過應(yīng)用來加深理解和記憶； 特別希望大家在學(xué)習(xí)的過程中一定要重視利 用 MATLAB來完成實(shí)際的信號處理任務(wù) 。 ? 國內(nèi)外各大學(xué)的電子信息類學(xué)科和專業(yè)，紛紛將數(shù)字信號處理列為必修課程，并加強(qiáng)了課程的建設(shè)與改革。 ? 這也就是為什么，國內(nèi)外的大學(xué)，都將本課程列為必修的專業(yè)基礎(chǔ)課程。 Why digital? (7) Error Correcting Codes Data retrieval and transmission systems suffer from a number of potential forms of error. With information in a digital or binary form, we may easily build into the data stream additional “redundant” bits that are used to detect when an error has occurred. Why digital? (8) Data Transmission and Storage The Inter, Compact Disc (CD) and Digital Video Disc (DVD) brought information based on troublefree highquality text, audio and video into the office and home. The fidelity of the digital medium is greater than that of the analog one. Why digital? (9) Data Compression The information channels cost and transmission bottlenecks make pression necessary for realtime processing. With analog pression some information is lost. A typical example is the bandwidth limiting applied to analog telephone lines in order to multiples calls, which limits the frequency response to 3kHz. We still need analog processing （ 1） RealTime Processing Analog system： Besides the delay introduced by the circuit, the processing is in realtime. Digital system： Decided by the processor speed. We still need analog processing （ 2） Processing very high freq
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