A triangle wave with period T0 = 1/20 has the truncated Fourier expansion (recall Week 5 for CT Fourier series) x(t) = cos(2π · 20t) + 1 9 cos(3 · 2π · 20t) + 1 25 cos(5 · 2π · 20t) (i) Write a Matlab program that adds noise randn(1, N) to this triangle wave. (ii) Use a sampling rate of 44100 samples per second and signal length N = 11025 to get a discretetime signal x[n]. (iii) Use thresholding and DFT to eliminate the noise in the signal. (iv) Plot the noisy and filtered wave forms for 0 ≤ t ≤ 0.25.

answer unified communications;

we can all learn from our past mistakes because we all have different ways of learning different types of techniques. my way may or may not another classmate remember and have the repetition to acknowledge such standard. such as remembering acronyms. using abbreviations to us remember keep things in order in our memory. this us figure out what comes next in the sequence. if so, what we have is a sentence of just letters all in caps. we either know the meaning or have no idea what it stands for. most of the time we know the meaning and context. but most of us who don't know, should learn by having a quick glance at what needs to be remembered. such as repetition in the memory for acronyms. one way that me, is the fact that i'm always doing math and english assignments. so we have to remember specific meanings such as soapstone for documents, such as citing correctly. or pemdas for doing the equations correctly, even if it's the super long way. this works for everyone. you just have to find what works for you by practicing and repetition daily.