Analog and Digital Signals and Systems by R. K. Rao Yarlagadda

By R. K. Rao Yarlagadda

This is a finished and cohesive presentation of analog and electronic sign processing and filtering for electric engineers. the writer covers the primary strategies of analog and electronic signs, generalized Fourier sequence approximations with sinusoidal and non-sinusoidal services, and analog convolutions and correlations. indications and linear approach interactions, process balance and bandwidths also are mentioned. research and layout of analog low-pass, high-pass, band-pass, band removal filters, and hold up line filters are mentioned utilizing operational amplifiers. difficulties linked to nonlinear platforms are included.

Key good points include:

  • Discrete-time Fourier transforms
  • SINC capabilities to demonstrate the generalized Fourier sequence concepts
  • One constant notation scheme used during the e-book

The writer addresses the most recommendations of electronic indications, convolution, correlation and deconvolution. electronic clear out designs utilizing finite and endless established impulse responses are provided besides their clear out buildings. additionally integrated is assurance of easy analog communications together with AM, FM and multiplexing in addition to basic electronic modulations. instance difficulties are awarded intimately in the course of the publication and over four hundred finish of bankruptcy difficulties are supplied for additional study.

Show description

By R. K. Rao Yarlagadda

This is a finished and cohesive presentation of analog and electronic sign processing and filtering for electric engineers. the writer covers the primary strategies of analog and electronic signs, generalized Fourier sequence approximations with sinusoidal and non-sinusoidal services, and analog convolutions and correlations. indications and linear approach interactions, process balance and bandwidths also are mentioned. research and layout of analog low-pass, high-pass, band-pass, band removal filters, and hold up line filters are mentioned utilizing operational amplifiers. difficulties linked to nonlinear platforms are included.

Key good points include:

  • Discrete-time Fourier transforms
  • SINC capabilities to demonstrate the generalized Fourier sequence concepts
  • One constant notation scheme used during the e-book

The writer addresses the most recommendations of electronic indications, convolution, correlation and deconvolution. electronic clear out designs utilizing finite and endless established impulse responses are provided besides their clear out buildings. additionally integrated is assurance of easy analog communications together with AM, FM and multiplexing in addition to basic electronic modulations. instance difficulties are awarded intimately in the course of the publication and over four hundred finish of bankruptcy difficulties are supplied for additional study.

Show description

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Additional resources for Analog and Digital Signals and Systems

Example text

The first part of the signal does not have any speech in it and the small amplitudes of the signal represent the noise in the tape recorder and/or in the room where the speech was recorded. It represents a random signal and can be described only by statistical means. Random signal analysis is not discussed in any detail in this book, as it requires knowledge of probability theory. The second part represents the phoneme ‘‘sh’’ that does not show any observable pattern. It is a time signal for a very short time and has finite energy.

Random signals require some knowledge of probability & theory, which is beyond the scope here. 5 In signal analysis, scaling and shifting of a function are quite common. a. Show that the functions xðtÞ and xðt À aÞ have the same areas and energies. b. Show AreaðxðatÞÞ ¼ ð1=jajÞAreaðxðtÞÞ; a 6¼ 0: jxðt À aÞj dt ¼ À1 Z1 jxðbÞj2 db: (1:5:9a) (1:5:9b) À1 Solution: a. 9b) can be shown in both cases and is & left as an exercise. 2 Periodic Functions A function xðtÞ is periodic or T-periodic if there is a number T for all time such that xðt þ TÞ ¼ xðtÞ: 0 2 xðbÞdb: b.

Both the sinc and the sinc2 functions are even. That is, t Fig. 5 Signum function sgnðtÞ sincð À plÞ ¼ sincðplÞ and sinc2 ðÀplÞ ¼ sinc2 ðplÞ: sgnðtÞ ¼ uðtÞ À uðÀtÞ ¼ 2uðtÞ À 1: (1:2:13) (1:2:17b) sgnðtÞ ¼ lim½eÀat uðtÞ À eat uðÀtފ; a > 0: (1:2:14) These functions can be evaluated easily by a calculator. For the sketch of a sinc function using MATLAB, see Fig. 2 in Appendix B. 0 It is not defined at t ¼ 0 and is chosen as 0. 3 Derivatives and Integrals of Functions SiðyÞ ¼ Zy sinðaÞ da: a 11 (1:2:18a) 0 The values of this function can be computed numerically using the series expression SiðyÞ ¼ y y3 y5 y7 þ À þ À...

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