Explain the term aliasing and discuss how it can be avoided in digital sampling.

EEE

What do you mean by fractional sampling rate conversion? Explain with an example of converting 48 kHz signal to 44.1 kHz signal using multi-stage fractional sampling rate converter. (ii) What are the effects of finite word length in digital filters

A PCM based system uses Companding. Is Companding introduced because: Select one: O a. O b. Noise has more effect on low signal levels than on large signal levels, and Companding helps to reduce this. Human speech is very random AWGN noise is removed by Companding C. Noise from quantisation is removed by Companding O d.

Q3) Twenty voice signals are sampled uniformly and then time division multiplexed. The sampling operation uses flat samples with 2 us duration. The multiplexing operation provides for synchronization by adding an extra pulse of 2 us. the highest frequency component of each signal is 3.4 kHz. a. For sampling rate of 8 kHz, calculate spacing between successive pulses of multiplexed signal. b. For Nyquist rate, repeat part a.

Related to communication system

A discrete-time sample is equal to -0.35. Using a 2-bit truncation quantizer (with range between -2.5 to 2.5) would result in -0.25 -1.25 -0.35

Choose the correct answer low HDOP (Horizontal Dilution of Precision) number such as2 indicates a ........................... a.poor fix b.good fix c.poor signal quality d. good signal quality

Explain the concept of modulation and demodulation in analog and digital data transmission.

If you reduce the sampling frequency of a digital audio signal, what do you expect to hear when you play it?