i am getting an error stating not enough input arguments someone please check through it for my mistakes

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taraneenadh bammidi
taraneenadh bammidi 2018-12-15
回答： madhan ravi 2018-12-15
function[Filterd_Output_Sig,Filt_Nuem,Filt_Denomi] = LPBUTTERFRAC(Msg_bits,Freq_Cutoff,Sam_Frequ,Fil_Order); %error : not enough input arguments
Freq_Nyquist = Sam_Frequ/2;
Non_Dimen_Freq=Freq_Cutoff/Freq_Nyquist;
[Filt_Nuem,Filt_Denomi]=butter(Fil_Order,Non_Dimen_Freq,'low'); % Filter Construction
Filterd_Output_Sig=filtfilt(Filt_Nuem,Filt_Denomi,Msg_bits);
LPF_Par_Order=1;
[Filterd_Output_Sig,Filt_Nuem,Filt_Denomi] =LPBUTTERFRAC(Msg_bits,1000,Freq_Step,5);
[Error_Mag_L,Error_Resp_L] = freqz(Filt_Nuem,Filt_Denomi,256,Freq_Step);
figure(2)
Error_Mag_Frac=angle(Error_Mag_L)*LPF_Par_Order;
plot(Error_Resp_L,Error_Mag_Frac,'r');
LPF_Par_Order=1.2;
[Filterd_Output_Sig,Filt_Nuem,Filt_Denomi]=LPBUTTERFRAC(Msg_bits,1000,Freq_Step,5);
[Error_Mag_L,Error_Resp_L] = freqz(Filt_Nuem,Filt_Denomi,256,Freq_Step);
figure(2)
Error_Mag_Frac=angle(Error_Mag_L)*LPF_Par_Order;
plot(Error_Resp_L,Error_Mag_Frac,'b');
LPF_Par_Order =1.4;
[Filterd_Output_Sig,Filt_Nuem,Filt_Denomi] =LPBUTTERFRAC(Msg_bits,1000,Freq_Step,5);
[Error_Mag_L,Error_Resp_L] = freqz(Filt_Nuem,Filt_Denomi,256,Freq_Step);
figure(2)
Error_Mag_Frac=angle(Error_Mag_L)*LPF_Par_Order;
plot(Error_Resp_L,Error_Mag_Frac,'g');
hold on
LPF_Par_Order =1.6;
[Filterd_Output_Sig,Filt_Nuem,Filt_Denomi]=LPBUTTERFRAC(Msg_bits,1000,Freq_Step,5);
[Error_Mag_L,Error_Resp_L] = freqz(Filt_Nuem,Filt_Denomi,256,Freq_Step);
figure(2)
Error_Mag_Frac=angle(Error_Mag_L)*LPF_Par_Order;
plot(Error_Resp_L,Error_Mag_Frac,'y');
axis on
grid on
legend('order 1','order 1.2','order 1.4','order 1.6');
title('Error Response of Fractional Low Pass Filter')
xlabel('Frequeny');
ylabel('Error Magnitude(dB)');

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回答（1 个）

madhan ravi
madhan ravi 2018-12-15
You didn’t define the input arguments before calling the function.

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