# Digital Signal Processing using MATLAB and Wavelets by Michael Weeks

By Michael Weeks

Textual content isn't highly thourough or rigorous. Introduces a few recommendations like FFT with no explaining them absolutely, leaving that for later sections. If paying for for a category you haven't a lot selection, if deciding to buy for reference or own examine i might glance somewhere else.

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Extra resources for Digital Signal Processing using MATLAB and Wavelets

Example text

625 as a fixed-point binary number. 8. 1 as a fixed-point binary number. 9. Convert the Cartesian point (2, 5) to polar coordinates. 10. Convert the polar coordinates 4, 25 degrees to Cartesian coordinates. 11. Explain what we mean by quantization in time, and quantization in amplitude. 12. Why are sinusoids useful in digital signals? 13. Why is there a problem using θ = arctan(b/a) for conversion to polar coordinates? 14. What are the differences between analog and digital? Chapter 2 MATLAB MATLAB is a programming environment which has gained popularity due to its ease of use.

This graph looks like a sine wave. The seasons change with time, but they always repeat. Therefore, this signal is periodic. Introduction 23 Examples of sinusoidal signals are all around us. The rotation of the moon around the earth, the temperature of a city over a day’s time, and the acoustic waves made by human speech are all examples of sinusoidal-like signals. Human speech is interesting, because it may be a single sinusoid (such as a vowel sound), or a composite signal made up of several sinusoids.

This essential information is not stored within the signal, but must be known in order to make sense of the signal. Signals are often studied in terms of time and amplitude. Amplitude is used as a general way of labeling the units of a signal, without being limited by the specific signal. When speaking of the amplitude of a value in a signal, it does not matter if the value is measured in degrees centigrade, pressure, or voltage. Usually, in this text, parentheses will be used for analog signals, and square brackets will be used for digital signals.