1. Assume that compression is not used for audio CDs. How many MB of data must the compact disc contain in order to be able to play two hours of music? 2. In Fig. 42(c), quantization noise occurs...

1. Assume that compression is not used for audio CDs. How many MB of data must the compact disc contain in order to be able to play two hours of music?

2. In Fig. 42(c), quantization noise occurs due to the use of 4-bit samples to represent nine signal values. The first sample, at 0, is exact, but the next few are not. What is the percent error for the samples at 1/32, 2/32, and 3/32 of the period?

Figure 42.
(c) Quantizing the samples to 4 bits.