5.2-1 A compact disc (CD) records audio signals digitally by using PCM. Let the audio signal bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L = 65,536 levels and then binary-coded, determine the number of binary digits required to encode a sample. (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting ratio of signal to quantization noise (SNR) of the uniform quantizer output in part (a). (c) Determine the number of binary digits per second (bit/s) required to encode the audio signal.

5.2-1 A compact disc (CD) records audio signals digitally by using PCM. Let the audio signal bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L = 65,536 levels and then binary-coded, determine the number of binary digits required to encode a sample. (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting ratio of signal to quantization noise (SNR) of the uniform quantizer output in part (a). (c) Determine the number of binary digits per second (bit/s) required to encode the audio signal.

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...

See similar textbooks

Similar questions

The minimum bandwidth for a 32PSK modulated signal with a baud rate of 3000baud is a. 3000 Hz b. 12 kHz c. 600 Hz d. 15 kHz
Describe briefly the effects of atmospheric conditions on the quality of signal.
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?
Given a 5uF cарасitor,compute the reactance of the following: a. at 50 Hz(ans: –j636.6198 ) rad b.at 100 (ans: -j2000 N) sec c. at 60 cps (ans: -j530.5165 N)
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?
q)what the advantages of using correlation measurements to improve signal detection?
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,
(B) The signal Vin(t)-2Cos(2nfit)+2Cs (2nfat), passes through a square-law device where the output signal Voft) is given by V-(Vin)2 and fi-2 KHz and f-6KHz. Calculate the average power at the output of the square-law device.
What is a minimum number of sampling frequency required to have distortion free reconstruction of a digital signal from its samples?
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)
Type your question here Determine the saving, in signal power, in the case of 50% modulated AM signal, if the carrier is suppressed before transmission.
(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.