w[n] = 0.54 0.46 cos 2nn N-1 1) (3.26 w[n] = a + a,cos (2** + a,cos( 21 ) + a,cos( 21 31 (3.27) 5. Use sig_noise to generate a signal that contains a combination of 200- and 300-Hz sine waves with SNRs of - 4 dB. Make the data segment fairly short, 64 samples, and recall f;= 1 kHz. Plot the magnitude spectrum obtained with a rectangular, a Hamming, and a Blackman-Harris window. Generate 512-sample Hamming and Blackman-Harris windows using Equations 3.26 and 3.27. Multiply these windows point by point with the signal. Plot the magnitude spectra of the three signals. Note that the difference is slight, but could be significant in certain situations. w[n] = 0.54 0.46 cos 2nn N-1 1) (3.26 w[n] = a + a,cos (2** + a,cos( 21 ) + a,cos( 21 31 (3.27) 5. Use sig_noise to generate a signal that contains a combination of 200- and 300-Hz sine waves with SNRs of - 4 dB. Make the data segment fairly short, 64 samples, and recall f;= 1 kHz. Plot the magnitude spectrum obtained with a rectangular, a Hamming, and a Blackman-Harris window. Generate 512-sample Hamming and Blackman-Harris windows using Equations 3.26 and 3.27. Multiply these windows point by point with the signal. Plot the magnitude spectra of the three signals. Note that the difference is slight, but could be significant in certain situations