The frequencies for the seven “white key” notes produced on the tempered scale of a piano (starting with middle C) are shown in Table 1.4. A computer analyzes the pressure displacement versus time for the wave produced by a tuning fork and gives its equation as y = 1.23 sin (2073.55x - 0.49) + 0.44. (a) Estimate the frequency of the note produced by the tuning fork. (b) Identify the note produced by the tuning fork.