In PCM, the parameter varied in accordance with the amplitude of the modulating signal is

In uniform quantization process

A. The step size remains same

B. Step size varies according to the values of the input signal

C. The quantizer has linear characteristics

D. Both a and c are correct

The process of converting the analog sample into discrete form is called

A. Modulation

B. Multiplexing

C. Quantization

D. Sampling

The characteristics of compressor in μ-law companding are

A. Continuous in nature

B. Logarithmic in nature

C. Linear in nature

D. Discrete in nature

The modulation techniques used to convert analog signal into digital signal are

A. Pulse code modulation

B. Delta modulation

C. Adaptive delta modulation

D. All of the above

The sequence of operations in which PCM is done is

A. Sampling, quantizing, encoding

B. Quantizing, encoding, sampling

C. Quantizing, sampling, encoding

D. None of the above