Routine mar1psd: To compute the power spectum by AR-model parameters.
Input parameters:
ip : AR model order (integer)
ep : White noise variance of model input (real)
ts : Sample interval in seconds (real)
a : Complex array of AR parameters a(0) to a(ip)
Output parameters:
psdr : Real array of power spectral density values
psdi : Real work array
in chapter 12
W2kPrintDrvSample
Feature
=======
* Support two page directions, portrait and landscape
* Support just one page size, A4
* Support two resolutions, 200 x 200 and 100 x 100 dpi
* Support two color mode, color(24bpp) and monochrom
* Support halftoning in monochromatic mode
* Support color identifying(7 colors)
* Support type identifying(3 types)
...
Usage
=====
* 在monochromatic mode下，可以通過設置黑色的輸出類型來控制輸出
* 在color mode下，可以通過設置各個顏色的輸出類型來控制輸出，7種
顏色以外的顏色都作為黑色來識別
* 在輸出多頁文件時，可以分別指定每頁的輸出文件名，也可以使用自動
添加頁號的功能
...
Known Problems
==============
Developer Notes
===============
* 在windows ddk 命令行環境下編譯
參考步驟：
1. 將W2kPrintDrv解壓至DDK安裝目錄
2. 執行“開始”菜單->Developement Kits->Windows 2000 DDK->Checked Build Enviroment
3. 在命令行環境輸入
> cd W2kPrintDrv
> build
Author
======
terrificskyfox <terrificskyfox@yahoo.com.cn>
Rotating shafts experience a an elliptical motion called whirl. It is important to decompose this motion into a forward and backward whil orbits. The current function makes use of two sensors to generate a bi-directional spectrogram. The method can be extended to any time-frequency distribution
％
％ compute the forward/backward Campbell/specgtrogram
％
％ INPUT:
％ y (n x 2) each column is measured from a different sensor
％ ///////
％ __
％ |s1| y(:,1)
％ |__|
％ __
％ / \ ________|/
％ | | | s2 |/ y(:,2)
％ \____/ --------|/
％
％ Fs Sampling frequnecy
％
％ OUTPUT:
％ B spectrogram/Campbel diagram
％ x x-axis coordinate vector (time or Speed)
％ y y-axis coordinate vector (frequency [Hz])
Writing an Input Module
The sample module introduced here is called idiom (Input Device for Intercepting Output of Mice), The sample module registers itself with the USB kernel subsystem as a mouse driver and with the input management subsystem as a keyboard driver. idiom translates mouse movement events into keyboard input events: it reports arrow events to the input system according to how the physical mouse is moved.
The same two-stage decoder as above. However, when transforming the symbols prior to Viterbi decoding, the amplitude information is ignored and only the phase of the received symbol is employed in the metric computation stage.
