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Topic: SNR Calculation
Replies: 1   Last Post: Feb 7, 2013 7:40 AM

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Greg Heath

Posts: 5,922
Registered: 12/7/04
Re: SNR Calculation
Posted: Feb 7, 2013 7:40 AM
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"Julhas Sujun" wrote in message <keq678$rsj$1@newscl01ah.mathworks.com>...
> Hello,
>
> I have made a signal with noise.Like:
>
> sqrt_snr = 4; init = 2055615866;
> [xref,x] = wnoise(1,11,sqrt_snr,init);
> db=10;
> sig_var=cov(xref');
> randn('state',0);
> v1=randn(1,size(xref'));
> noise_var=sig_var*10^(-db/10);
> noise=sqrt(noise_var)*v1;
> %Noise Genarate Signal
> Sn=xref+noise;
> figure(2);subplot(3,1,1);plot(xref);title('Genarate wave')
> subplot(3,1,2);plot(noise);title('Genarate noise')
> subplot(3,1,3);plot(Sn);title('Genarate wave and noise')
>
> How i will denoise Sn signal and calculate SNR.
>
> Please any help me.


Low pass filter or sliding window average.

Greg



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