A sinusoidal massage signal m(t) is transmitted by binary PCM without compression. If the signal to-quantization-noise ratio is required to be at least 48 dB, the minimum number of bits per sample will be(a) 8(b) 10(c) 12(d) 14The question was asked during an interview for a job.My question is from Digital Transmission topic in division EDC Overview of Electronic Devices & Circuits

A sinusoidal massage signal m(t) is transmitted by binary PCM without

1.	A sinusoidal massage signal m(t) is transmitted by binary PCM without compression. If the signal to-quantization-noise ratio is required to be at least 48 dB, the minimum number of bits per sample will be(a) 8(b) 10(c) 12(d) 14The question was asked during an interview for a job.My question is from Digital Transmission topic in division EDC Overview of Electronic Devices & Circuits
Answer» RIGHT CHOICE is (a) 8 The BEST explanation: 3(L^2)/2 = 48 db or L = 205.09. Since L is power of 2, so we SELECT L = 256 HENCE 256 = 2^8, So 8 bits per sample is required.

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