HAHAHAHA(HAx4)'s       

 Found Another Relic from SJTU-BBS 6/24/2007

TI C54X assembly syntax color (UltraEdit wordfile.txt for TI C54X assembly)

http://bbs.sjtu.edu.cn/bbsgcon?board=DSP&file=G.962427104.A

    Posted by HAx4 at 11:39 PM |  0 Comments  
 Notes on Switched Capacitance Biquad Filter 6/14/2007

1) Mathematically determine the parameters of Biquad filter in S domain and Z domain. See Ref[1] (at 'Rabbit Hole') for detail. One thing worth noting is that the bilinear transformation between S domain and Z domain would introduce distortion ( frequency warping). To minimize the distortion, sample rate has to be much greater than the frequency of interest

2) Determine the capacity values for switched capacitance implementation. See ref[2] for detail. Matlab m files for that purpose can also be found at 'Rabbit Hole'.

3) Some of the circuits from Ref[2] need to be optimized for switch sharing.

References:

[1] How to Determine the Parameters for Biquad Filter, By HAHAHAHA(HAx4), Version 1.0
[2] David A. Johns and Ken Martin, Analog Integrated Circuit Design, John Wiley & Sons, Inc.1997

    Posted by HAx4 at 8:56 PM |  0 Comments  
 A Piece of History 6/03/2007

I found the following link at SJTU BBS:

http://bbs.sjtu.edu.cn/bbsanc,path,%2Fbmstat%2FM.983726061.A.html

To be fair, my score was not bad. Those were "the good old days", when life was still concealing most of its dark side from us.

    Posted by HAx4 at 1:20 AM |  0 Comments  
   

 

 

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