％ because we do not truncate and shift the convolved input
％ sequence, the delay of the desired output sequence wrt
％ the convolved input sequence need only be the delay
％ introduced by the ideal weight vector centred at n=5
This tutorial will deal with getting input using Direct Input. All you will need to
run and/or compile this tutorial is a keybaord, mouse, DirectX 8.0 or 9.0 and the
DirectX 8.0 or 9.0 SDK.
Patterns of Enterprise Application Architecture is written in direct response to the stiff challenges that face enterprise application developers. The author, noted object-oriented designer Martin Fowler, noticed that despite changes in technology--from Smalltalk to CORBA to Java to .NET--the same basic design ideas can be adapted and applied to solve common problems. With the help of an expert group of contributors, Martin distills over forty recurring solutions into patterns. The result is an indispensable handbook of solutions that are applicable to any enterprise application platform
Generate 100 samples of a zero-mean white noise sequence with variance , by using a uniform random number generator.
a Compute the autocorrelation of for .
b Compute the periodogram estimate and plot it.
c Generate 10 different realizations of , and compute the corresponding sample autocorrelation sequences , and . Compute the average autocorrelation sequence as and the corresponding periodogram for .
d Compute and plot the average periodogram using the Bartlett method.
e Comment on the results in parts (a) through (d).
DM642上的DMA性能一個(gè)簡(jiǎn)單的介紹和分析。
DM642中的DMA稱為EDMA（Enhanced Direct Memory Access）,其EDMA控制器支持64個(gè)相互獨(dú)立的DMA通道，每個(gè)通道都可以接受系統(tǒng)外設(shè)事件的觸發(fā)或者CPU的指令的觸發(fā)，不同DMA傳輸之間還可以進(jìn)行連接，構(gòu)成各種復(fù)雜的DMA操作，在600MHz主頻時(shí)可以提供2.4GB/秒的數(shù)據(jù)吞吐量。具備的1維、2維傳輸模式，非常適合圖像的處理。
