Introduction to Computational PhysicsPhy 265 Quiz 9 (Take-Home)Due 12:40 p.m. April 15, 2011Write and upload the scriptdescribed below to the class website. In order toreceive full credit, your script must have proper formatting, run, and give thecorrect output.The touchtone keypad of a phone generates a dualtone multiple frequency (DTMF) signal when youdepress a key. Specifically, sinusoids of thecorresponding row and column frequencies aregenerated and summed to give the dual tone. Thefrequencies used for the tones in Hz are depictedin the diagram to the right.Write a MATLAB script file that will load intoMATLAB a DTMF signal and plot the amplitude of
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