1. The CT signal x(1)-6cos (800zt) + 8cos² (mæt) is eritically sampled (Nyquist rate) byf-8000 Hz. Find:i.The value of m.ii.The frequency components of the signal.The frequency resolution (A) of the output spectrum if the sampled signal isprocessed by 32point-DFT.iii.iv.Define frequency resolution.

Answered: Image /qna-images/answer/e841f82c-a299-4fbb-b276-76aabc7e124c.jpg

Answered: 1. The CT signal x(1)-6cos (800zt) +…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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3、The relationship between the signal frequency fc and sampling rate Ts is ( ) according to the Nyquist sampling law A、 fcTs>1 B、 2fcTs>1 C、 3fcTs>1 D、 4fcTs>1
Error propagation. We measure flux (f) and its uncertainty (df). Convert them into magnitude (m) and its uncertainty (dm). The signal-to-noise ratio can be written as SNR=f/df. What is the magnitude uncertainty when SNR=0.1, 1, 10, and 100?
Q2. For the scheme shown in Figure Q2, Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. i. ii. ii. 4 kHz cos 10,000xt Baseband signal 2 kHz cos 24,000nt cos 2000nt cos 32,000nt Figure Q2
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An audio signal given by 15 sin(4000ntt) + 20 sin(8000mt) amplitude modulated(DSB-FC) a sinusoidal carrier wave 60 sin(100,000nt) a. Derive an expression for the modulated signal. b. Find the modulation index. c. Find the spectrum of the modulated signal. d. Sketch the spectrum of the modulated signal e. Which type of demodulation method you propose to reconstruct the audio at receiver. Why?
PARTICULAR CONCEPT AND EXAMPLES OF : 1. Random Processes.1.2. Spectral characteristics.1.2.1. Power density spectrum.1.2.2. Definitions of noise
Q. 1 An analog electrocardiogram (ECG) signal contains useful frequencies up to 200 Hz. a) Compute the Nyquist rate for this signal? b) Suppose that we sample this signal at sampling frequency of 450 Hz. Determine the highest frequency that can be represented uniquely at this sampling 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,
If the amplitude of the modulation signal voltage was given to be -4v and +4v and carrier amplitude also given to be -22v and +22v, by suitable waveform diagram determine the Am modulated output. Remember to provide all necessary wave forms in practical terms.
If the signal to be analyzed is an analog signal, then we pass the signal to an antialiasing filter where B is the bandwidth of the filtered signal. What sampling frequency (Fs) should be used to make this signal discrete/digital?
(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.

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