Q: A signal X(t) = Sin 4000 π t  is convered to PCM with 256 quantizing levels. Calculate the bit rate of the resulting PCM signal. Assume that the signal is sampled at a rate 20 percent above the nyquist rate

Draw the spectrum of the sampled signal when the sampling rate is equal to 2.5 × 10* d) Draw the spectrum of the sampled signal when the sampling rate is equal to 1× 104 Draw the spectrum of the sampled signal at the Nyquist rte. An analog signal given by: x() = stn'(104) %3D is sampled using an ideal sampling tchnique. a) What is the Nyquist rate of this signal. Samplesec. the samplekse,

Digital signal process subject , need quick amd correctly

digital signal prossesing

3. Define aliasing, and suggest the methods to avoid aliasing problem. The spectrum of selected CT signal is given below. Draw the spectrum of the sampled signal with critical sampling, under sampling by 20%, and oversampling by 50%. Discuss the result. 10 -100 100 f (kHz)

(b) A Digital Signal Processing system, with a 16-bit uniformly quantising analogue-to- digital converter and a sampling rate of 20 kHz, is used to process analogue signals band- limited to the frequency range 0 Hz to 5 kHz. Estimate the maximum achievable signal- to-quantisation noise ratio (SQNR) for sinusoidal input signals, and state what assumptions it is reasonable to make about the statistical and spectral properties of the quantisation noise.

The Nyquist sampling interval, for the signal sinc(700t) + sinc(500t) is?

2. Define aliasing, and why it should be avoided? The spectrum of selected CT signal is given below. Draw the spectrum of the sampled signal with critical sampling, undersampling by 30%, and oversampling by 50%. Discuss the result. 1.0 -100 100 f (kHz)