May 2010
Beginner to intermediate
264 pages
7h 26m
English
Content preview from Digital Signal Processing 101Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 3Sampling, Aliasing, and Quantization
Now that we have the basic background material covered, let’s start talking about DSP. The starting point we need to understand is sampling and its effect on the signal of interest. To take an analog signal and convert it to a digital signal, we need to sample the signal using a device called an analog-to-digital converter (ADC). The ADC measures the signal at rapid intervals, and these measurements are called samples. It outputs a digital signal proportional to the amplitude of the analog signal at that instant. This scenario can be compared to looking at an object with only a strobe light for illumination. You can see the object only when the strobe light flashes. If the object is not moving, then ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.