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Recent content by dinolin

  1. D

    Can you run two interrupts simultaneously on PIC16F628

    Re: Interrupt handling Yes, you can :D
  2. D

    What's the importance of DSP for ADC?

    ADC 's 2 most important parameters: 1. resolution 2. bandwidth are both important to DSP and their application.
  3. D

    Amplitude noise and Phase noise?

    thermal noise is AWGN. Pink noise is used in audio. quantization noise is limited in amplitude. Not as same as thermal noise.
  4. D

    How to convert from RTL to gdsII to vhdl code?

    Re: what is GDS-II? to convert from RTL to gdsII to vhdl code? Very difficult work ....
  5. D

    how to solve the maximum eigenvalue of a matrix

    use newton method to get every eigenvalues, and sorting. The iteration count ..... it depends on the precision you want and initial value. I think to try it is the best policy
  6. D

    What kind of input should I give to CIC filter ?

    Re: input of CIC filter should be oversampling data !
  7. D

    What is the develoment of the audio codec?

    Only 1, but no ebook! you can search the internet for delta sigma or sigma delta tutorial!
  8. D

    how to do a deemphasis filter?

    3 tap de-emphasis If there is no pre-emphasis filter,should it use the de-emphais filter??? NO why the de-emphasis filter is different with the other in different sampling rate?? Because what you want is to compensate to the original analog source. So using different sample rate, the filter...
  9. D

    how to do a deemphasis filter?

    de-emphasis iir 32khz when the recording audio using preemphasis, the player must using deemphasis to do the recovery. It can reduce the hf noise that is nosiy to ear in analog audio recording.
  10. D

    What is the develoment of the audio codec?

    sigma delta ADC/DAC are old tech .... more than 20 years
  11. D

    Autoregressive moving average (ARMA)

    autoregressive moving average AR are the poles in DSP MA are the zeros in DSP
  12. D

    how to do a deemphasis filter?

    j17 emphasis frequency pole zero About the document , you can search in internet, i forgot it. the cheapest way is to do it using iir, with one pole and one zero.
  13. D

    JTAG emulation of the DSP?

    when DSP running control by JTAG. it is in the mode of JTAG Debugging, you can set brk point , step .... and get the some registers and memory of DSp, so the DSP is not in free running mode.
  14. D

    how to do a deemphasis filter?

    main tap first post deemphasis if this is for digital audio CD, as far as i can rember there is a 0db gain before 1k and 6db gain after 10k when preemphasis.

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