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Recent content by sxg

  1. S

    wg2005 sp1 (problem in iodesigner for fpga design)

    this time i am learning the WG just following WG's help file. but i can't get the same result as the help file descrption when i try to import the symbol into my central library using Libray Service : the option-seclect-box is default fixed at the option-Library database,the option from ASCII...
  2. S

    Help me to make a BFSK circuit

    Re: BFSK circuit make sure all of the job has done is right,then have pcb layout(option) and coding(your soft ware,bought compments,then assemb,hardwaredebug, finally hard-soft ware debug
  3. S

    u(-t) = or not = to - u(t) ?

    according the opinion of Singal and System,the y=u(-t) is roated the singal with the axis of y,but the y=-u(t) is roated with axis of t.
  4. S

    Ebook about matrix analyze needed!

    Matrix analysis by Combridge University Press is good
  5. S

    SoC system level simulation

    i think system c is good. For the hardware and sofware designed on the same platform ,it will reduce the Time to Market
  6. S

    Looking for resources on implementing digital filter fir/iir

    Re: please help Could you describe the question more detailedly? what means "he is doing good''? is the progamme working in order before you download the code on the Micro. if so ,may be the hardware resource is not enough to run the code. rescently ,i had implent a fir filter on TI5510. bless...
  7. S

    How the low price music and melody ICs are designed?

    Re: Music IC's the Sunplus MCU is a good choice ,it has strong voice process ability. it has widely used in toys、learning machines and other consumption E-products you can have a look at http://www.sunplus.com.tw/index.asp
  8. S

    about SOC design language:systemc

    oh ,thanks and i want to know is there any synthesis tools for systemc on PC.
  9. S

    Why when doing bode plots 20* logs is used?

    Re: Question about dB because P=U^2/R so 10*log(P)=10*log(U^2/R)=20*log(U)-10*log(R),where R is impedance always is a constant resistance.
  10. S

    Why BPSK set '1'-->'-1' and '0'-->'+1'?

    theoretically,you can modulate source with any different symbols. Usually,we use the signal set [A,-A] to modulate,not necessarily [1,-1]. A can expressed by :A=a*exp(j*Θ). to do as so ,the most advantage is there is no DC power
  11. S

    [SOLVED] Can I automatically convert Visual C\C++ code for DSP?

    Re: visual c\c++ for dsp The CCS can compile the c code ,it is automatic compiled into assemble code,you can optimize it directly. Matlab is always used in arithmetic simulation to verify the arithmetic. To convert the Matlab code into DSP,you can try it by DSP build
  12. S

    [SOLVED] Can I automatically convert Visual C\C++ code for DSP?

    Re: visual c\c++ for dsp Ye,it is too slow designing in assemble language,but the code is high efficiency in c or c++,the CCS complie them into assemble code,but you must optimize them
  13. S

    Good teaching materials for newbies in DSP

    Re: hello which field you want to learn? for control ,you can learn 6000serials for moblie signal process ,the ti 55serials is better for floating calculate 2000 serials is good you can first learn programme design usually beginning in assemble language then in C and optimize,but you'd...
  14. S

    [SOLVED] how to measure the input capacitor of opamp?

    for muster parameter device,you can test the impedance in two frequence, the you can calculate the capacitance
  15. S

    What is the significance of modulation index in AM?

    Re: AM it can shows the ratio of Psb to Pc Psb=0.5*Pc*m^2

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