AnsweredAssumed Answered

ADAU1701 Filter Latency

Question asked by ykanybb on Feb 19, 2016
Latest reply on Sep 30, 2016 by DaveThib

hi guys

     I need your help. I designed  a digital filter by Matlab and load the transform function parameters into the ADAU1701 board.The curve simulated in sigma studio is right,but I test the board use a spectral analysis SW and the phase shift.

EM截图_2016218233726.png

EM截图_2016218234224.png

The first figure is simulated by sigmastudio and the second one is test by spectral analysis SW.

                                                                          

  

  Is the phase shift due to the latency of the board,which is between the ADC and the DAC? How can I solve this problem and get a good curve.Thanks for your help.

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