MCQ on Sampling and Quantization

To avoid aliasing

• Reduce the bandwidth

• Cut out high frequency

• Reduce the bandwidth & Cut out high frequency

• None of the mentioned

Which requires interpolation filtering?

• Up-sampler

• D to A converter

• Up-sampler & D to A converter

• None of the mentioned

Decreasing the data rate is called as

• Aliasing

• Down sampling

• Up sampling

• None of the mentioned

Original signal came to be retraced from sampled version using

• Low pass filtering

• High pass filtering

• Low & High pass filtering

• None of the mentioned

The signal can be reconstructed

• At Nyquist rate

• Above Nyquist rate

• At & above the Nyquist rate

• None of the mentioned

Which device is needed for the reconstruction of signal?

• Low pass filter

• Equalizer

• Low pass filter & Equalizer

• None of the mentioned

Uniform & non-uniform quantization

• The step size remains same

• Step size varies according to the values of the input signal

• The quantizer has linear characteristics

• Both a) and c) are correct

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

• Modulation

• Multiplexing

• Quantization

• Sampling

The characteristics of compressor in μ-law companding are

• Continuous in nature

• Logarithmic in nature

• Linear in nature

• Discrete in nature

The sequence of operations in which PCM is done is

• Sampling, quantizing, encoding

• Quantizing, encoding, sampling

• Quantizing, sampling, encoding

• None of the above