A speech signal has a total duration of 20 sec. It is sampled at the rate of 8 kHz and then PCM encoded. The signal-to-quantization noise ratio is required to be 40 dB. The minimum storage capacity needed to accommodate this signal is

A speech signal has a total duration of 20 sec. It is sampled at the r

1.	A speech signal has a total duration of 20 sec. It is sampled at the rate of 8 kHz and then PCM encoded. The signal-to-quantization noise ratio is required to be 40 dB. The minimum storage capacity needed to accommodate this signal is
A.	1.12 KBytes
B.	140 KBytes
C.	168 KBytes
D.	None of the mentioned
Answer» C. 168 KBytes