Subject:
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Re: NXT Bot Idea - Audio Tracking
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 8 Mar 2006 23:09:52 GMT
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Viewed:
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7237 times
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In lugnet.robotics, Ed Manlove wrote:
> a bird finder/tracker. The bot could simply rotate towards
> the direction of the sound.
Interesting, although where I live I have a sneaking suspicion the NXT would
try to home in on every passing car and truck. But the NXT could be used to
track my kids (since I can't do that myself anyway).
> And taking the idea further you could do an educational
> experiment using two microphones and asking the question(s)...
>
> Why do we have two ears and not one? How does having two
> ears allow us to better determine the source of a sound?
Well, let's see, the distance between my ears is about 0.3 meters, and the
speed of sound is close to 300 m/s. So a best-case time-delay is arund a 0.001
seconds, or one millisecond. You couldn't do that with the RCX and standard
firmware (sensor reads were only about once every 3 ms), so the question is how
much faster the NXT firmware might be. 'Course, you could always make the
spacing between the sensors bigger I guess.
--
Brian Davis
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Message has 1 Reply:
 | | Re: NXT Bot Idea - Audio Tracking
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| (...) You can do that with the RCX using low-level functions that directly access the H8 microcontroller. (We actually did it with Ultimate ROBOLAB). (URL) already worked out several sound sensors. A particularly interesting one is used in robot (...) (21 years ago, 9-Mar-06, to lugnet.robotics)
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Message is in Reply To:
| | NXT Bot Idea - Audio Tracking
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| As I was standing outside today and listening to the woodpeckers in the trees I came up with an idea for a bot using the NXT sound sensor. You've guessed it, a bird finder/tracker. The bot could simply rotate towards the direction of the sound. And (...) (21 years ago, 8-Mar-06, to lugnet.robotics)
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