Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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If you reduce the sampling frequency of a digital audio signal, what do you expect to hear when you play it?
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- The following figures show part of an analogue signal being digitised, at two different sampling rates. Make your explanation brief. (1) Explain how the difference in the sampling rates in figure 1 and figure 2 will affect the file sizes after digitisation. (ii) Which of the two sampling rates would you consider to be the least efficient to reproduce the original analogue signal accurately? (iii) What is the preferred digital sample rate (frequency) of an analogue audio signal that would be needed to accurately reproduce the original signal? Figure 1 Figure 2 15 14 13 12 11 10 6. 8 7 6 15 14 13 12 11 10 4 (iv) Draw the digital signals corresponding to the analogue signals is Figure 1 and Figure 2.arrow_forwardwhat is the advantage of a quadrature encoder over non quadrature encoder(single output)?arrow_forwardDescribe the role of oscillators in microcontroller operation.arrow_forward
- 1. Suppose that you have a 12-bit, successive approximation register (SAR) A/D converter with a total conversion time of 100 microseconds (including sampling time). a). What is the maximum frequency of an analog signal that it can capture? b). Suppose that the converter can convert an input voltage over the range of 0 to +3.3V, what is the minimum voltage change that should be measurable by this converter? c). What is the quantization error of the ADC?arrow_forwardWhat will be the minimum bandwidth for a PCM system which has a 10 kHz input signal and 8 bits per sample transmission mode.arrow_forwardDiscuss the importance of analog-to-digital converters (ADCs) in microcontroller applications. Provide examples of analog sensors commonly interfaced with microcontrollers.arrow_forward
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