Digital LPF using impulse invariance method

See attached word file. Taken from 'Digital Signal Processing Using MatLab' by Ingle/Proakis 1. Design a digital LPF to be used in the configuration To satisfy the following requirements: • Sampling rate = 8 kilosamples/sec • Passband edge of 1.5kHz with ripple of 3dB • Stopband edge of 2kHz with attenuation of 40dB • Equiripple Passband but monotone Stopband, and • Impulse invariance (a) Choose T=1 in the impulse invariance method and determine the system function H(z) in parallel form. Plot the log-magnitude response in dB and the impulse response h(n). (b) Choose T=1/8000 in the impulse invariance method and determine the system function H(z) in parallel form. Plot th... click for more

DSP Quantisation question

See attached word document

Matlab help

Hi. Please help me with this Matlab assignment. x(n)=(1,2,3,4,5,6,7,8,9,10) h(n)=(1,1,-1,3,2) WRite a matlab program to computer y(n)=h(n)*h(n) (convolution) without using the matlab convolution function 'conv'. That is, write matlab code to computer the convolution sum (... using nested loops?). Then use conv(h,x) to check the work. Plot h, x, and y using the plot function. -- This is what I have: x=[0,0,0,0,0,0,0,0,0,0,1,2,3,4,5,6,7,8,9,10,0,0,0,0,0,0,0,0,0,0,0,0]; h=[0,0,0,0,0,0,0,0,0,0,1,1,-1,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]; y=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]; for n=-5:15, for k=-100:100, y(n+10)=y(n+10)+x(k+1... click for more

matlab help

I am still learning Matlab and am lost on this practice problem. Please write the routine and comment on what is being asked for. I am confused. Thank you. Assume the signal consist of a sum of 3 sinusoids (sine functions, no phase delay). One sine is at 50hz, the second is at 60hz, and the third is at 75 Hz. The 50hz and 60hz sines have a peak magnitude of 1, the 75hz sine has a peak magnitude of .1. Assume the combined signal is sampled at 240hz, and 256 samples of the signal are available. Perform the following using a rectangular window and a von Hann (Hanning) window. (I know that the rectangular window can be constructed using "w=boxcar(windowlength)" and the Hanning wi... click for more

dsp help please (I'm confused)

[A] The frequency response of a 2nd order LTI filter is H(e^jw)=(b0+b1e^-jw+b2*e^-2jw)/(1-a1*e^-jw-a2*e^-2jw) Assume b1=b2=0. In each case state whether the filter is highpass, lowpass or band pass and draw the pole/zero plot. i) a1=-1.8, a2=-.81 ii) a1=-1.27, a2=-.81 iii) a1=0,a2=-.81 iv) a1=1.27,a2=-.81 Explain the observations [B] The frequency response of an FIR filter is H(ejw)=b0+b1*e^-jw+b2*e^-2jw. In each case below, state whether the filter is highpass, lowpass, bandpass or band stop and draw the pole zero plot. i) b0=1, b1=-1.8, b2=.81 ii) b0=1, b1=-1.27; b2=.81 iii) b0=1, b1=0, b2=.81 Explain the observations