The sound produced by touching each button on a touch-tone phone is described by the equation below, where I and h are the low and high frequencies in the figure shown. The touch-tone phone sequence for Mary Had A Little Lamb is 3212333, 222, 399, 3212333322321. Many numbers do not appear in this sequence, including 0. You accidentally touch 0 for one of the notes. y= sin 2lt+ sin 2ght, t is time in seconds. a. Enter the sound produced as the sum of sines. Oren 697 770 WXY 852 941 High Low frequencies 1209 1336 1477 frequencies

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