Skip to Main Content
Make: More Electronics
book

Make: More Electronics

by Charles Platt
April 2014
Beginner to intermediate content levelBeginner to intermediate
392 pages
14h 57m
English
Make: Community
Content preview from Make: More Electronics

Chapter 14. Experiment 14: A Successful Protest

First I will restate the problem. Using the original concept of the Noise Protest Device that I developed in the previous experiment, if someone shouts loudly, the Protest Output will start and never stop. How can I deal with this?

One solution would be an audio filter on the microphone input so that the Noise Protest Device can’t hear its own noise but still hears when someone shouts. This would be possible, but I’m not confident that it would work reliably.

Another solution would be simply to limit the duration of the Protest Output to, say, a couple of seconds. Then there’s a pause while the Protest Output is suppressed. At the end of the pause, the Protest Output is now silent so it cannot retrigger ...

Become 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,
and much more.
Start your free trial

You might also like

Make: Electronics

Make: Electronics

Charles Platt
Easy Electronics

Easy Electronics

Charles Platt

Publisher Resources

ISBN: 9781449344030Errata PagePurchase book