Help, problem with dsp.BiquadFilter

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Zakaria Makhlouki
Zakaria Makhlouki 2016-12-27
评论： Muhammad Younus 2018-5-14
using the same code in this page https://www.mathworks.com/help/audio/examples/active-noise-control-using-a-filtered-x-lms-fir-adaptive-filter.html#zmw57dd0e848, during the execution I have a problem in this line
sedondaryPathCoeffsActual = bandpass([zeros(delayS,1); ...
log(0.99*rand(N-delayS,1)+0.01).* ...
sign(randn(N-delayS,1)).*exp(-0.01*(1:N-delayS)')]);
I am not able to solve it, please help me.
  2 个评论
Walter Roberson
Walter Roberson 2016-12-27
What error message are you observing?
Muhammad Younus
Muhammad Younus 2018-5-14
Array formation and parentheses-style indexing with objects of class 'dsp.BiquadFilter' is not allowed. Use objects of class 'dsp.BiquadFilter' only as scalars or use a cell array.
Error in SecondaryPathCalculation (line 15) secondaryPathCoeffsActual = bandpass([zeros(delayS,1); ...

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