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Recent content by Wenye

  1. W

    Dithering the digital audio signal

    Thank you very much. :D
  2. W

    Dithering the digital audio signal

    Thank you for your reply. Some one tell me there are many dirthing or noise shapping mothd. But I can not find detail arithmetic. Can you help on it? Or is there any e-book or book has the relate detail infomation. Thank you.
  3. W

    Dithering the digital audio signal

    Hi Everybody, I'm a new comer to digital audio signal processing. I'm now need to round-off a 32bit fixed point signal to 24bit. I think I have to add some dither in to reduce error. Can anyone help on the audio signal dithering or noise shaping arithmetic? Where to find the resource...
  4. W

    who can provide any document about delta-sigma &noise sh

    Re: who can provide any document about delta-sigma &nois Hi zyyang, Where can I get the book? Do you know where to get the e version........... :D
  5. W

    Class G and Class H power amplifier

    Quite different between class T and class G amplifier. Class T is one kind of digital power amplifier. Class G and Class H still analog.
  6. W

    Class G and Class H power amplifier

    Dear all, For now a day high power professional audio power amplifier design, Class G amplifier is the mainstream. Almost all of the great design are Class G. So, could anybody help me with a class G amplifier design? 1. I want to know what's different between Class G and Class H amplifier...
  7. W

    what circuit it this? is it a LC filter?

    Hi Nathan, It just a de-coupling circuit for your power supply. To provid more clearly power for your analog IC. Best Regards, Wenye
  8. W

    High speed coupling capacitor

    Hi, Ipanema You can use multi-layer ceramic capicitor. We use 0805 for cable tv application It need flatness response from 5MHz to 1Ghz. I think it will not cause problems in your system. Regards, Wenye
  9. W

    Help me select an output buffer

    Re: output buffer? Agree with kral. You can simply use a commercial buffer amp with an analog switch for this case. Analog device provide many kind of switches can meet your requirement such as ADGxxx series devices. Regards, Wenye
  10. W

    [Help]...advise optocoupler

    what is your purpose?
  11. W

    How to measure SFDR for 14 bits ADC

    Re: SFDR You may need a high performance Spectrum analyzer.
  12. W

    High performance turnable notch filter

    Hi Sinatra, Could you explain about what is "Antoniou GIC" ? Or do you have any papers about it? Another question, if the switched capacitor is emploied, how do you think about the clock feed-through problem? Thank you Wenie
  13. W

    how to desgin a phase shifter in base band?

    kokikak2, You may need to design a all pass filter for this application. Delay time will be a constant but shifted phase will be depand on frequency. No matter you design a circuit to shift phase of tone. But it's nearly improsible to shift a board band analog signal in a same vaule of...
  14. W

    High performance turnable notch filter

    Hi Sinatra, Considering FET as a VCR for turn the center frequency. I need to make some test for the THD+N performance.... Thank you Wenye Added after 12 minutes: Hi Moda, My project is audio analyzer, I need outstanding analog singal conditing circuit performance for ADC to reach the...
  15. W

    IR sensor sensitivity

    The most efficiency way to solve this problem is: add an optical filter to filtering all of the visible light. It's cheap and easy.
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