January 2014
Intermediate to advanced
474 pages
13h 28m
English
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Chapter 13. Advanced PWM Tricks
To create audio that’s more interesting than square waves, we’re going to use PWM to create rapidly changing intermediate voltages that’ll trace out arbitrary waveforms. For now, we’ll content ourselves with a few of the traditional synthesizer-type waveforms (sine, sawtooth, and triangle waves), but this project also lays the groundwork for playing back sampled speech. (When we have enough memory at our disposal, in Chapter 18, we’ll use the same techniques to make a talking voltmeter.) We’ll also be able to change the volume of the sounds and mix multiple sounds together. If you like making spacey, droney sounds or just something more musical than the square wave sounds we’ve been making ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.