Chapter3-Supplemental-1

Chapter3-Supplemental-1 - Bandwidth of Signals and Systems...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
P.1 Bandwidth of Signals and Systems (*after page 8) Recall from Chapter 1 that we can represent any signal by its spectrum in frequency domain. Spectrum represents the amplitude of sine waves that constitute the signal. Most signals has a maximum frequency f m and/or a lower frequency f L beyond which the component sine wave is zero or negligible. The bandwidth of a signal is the width of the range of frequencies for which the spectrum is non-zero: bandwidth = f m -f L Recall that an LTI system can also be characterized by its spectral response , which we sometimes also call the spectrum. The bandwidth of a system is the width of the range of the frequencies over which the spectral response is non-zero. 3,000 4,000 A typical human speech spectrum shown in Chapter 1. In the telephone network the spectrum is truncated to 4 KHz 1 10 k 1 100 k 10 k 100 20 k 20 The typical audio spectral response of a young human Hz Hz (log scale)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
P.2 Bandwidth and Maximum Frequency Often, the lower frequency limit is at or close to zero. Then we
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/28/2011 for the course ELEC 001 taught by Professor Albertwong during the Spring '09 term at HKUST.

Page1 / 8

Chapter3-Supplemental-1 - Bandwidth of Signals and Systems...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online