Subject:
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Re: Nic_1
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 10 Feb 2006 16:17:59 GMT
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Viewed:
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1743 times
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In lugnet.robotics, Matthew Ruschmann wrote:
> In lugnet.robotics, Claude Baumann wrote:
> > If you want to see Nic_1, a sound following robot, go to
> > http://www.convict.lu/Jeunes/ultimate_stuff/Nic_1.htm
> >
> > Nic_1 runs a program on the RCX that first samples two RCX sensor input ports at
> > 36000 Hz (there is no mistake here !) to receive 300 samples from both
> > microphone channels. Then the program operates a fast and simplified
> > cross-correlation, yielding the phase-lag between both audio-signals. This value
> > is used to indicate the direction towards which Nic_1 is supposed to turn. The
> > program prunes erroneous values that might appear due to room reverberation. The
> > program was written with Ultimate ROBOLAB.
> >
> > The video shows Nic_1 whilst tracking radio-music. It also could be a music
> > instrument or a human voice.
> >
> > Enjoy.
>
> Hey that's pretty amazing for the standard RCX firmware. I guess calculation
> time doesn't really matter though. I'm a graduate EE taking estimation theory
> this semester so I'll keep this close to my heart. :-p
>
> I can't wait to try 2 mics on the new NXT! Ugh. August. I already have my
> money saved up.
>
> Added it to my blog. Not that I get much traffic to the front page.
>
> http://superpositioned.com
Thanks,
... note that the program has NOT been set up with the standard firmware.
Ultimate ROBOLAB is an extension to normal ROBOLAB to produce our own
stand-alone firmware.
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Message is in Reply To:
 | | Re: Nic_1
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| (...) Hey that's pretty amazing for the standard RCX firmware. I guess calculation time doesn't really matter though. I'm a graduate EE taking estimation theory this semester so I'll keep this close to my heart. :-p I can't wait to try 2 mics on the (...) (19 years ago, 10-Feb-06, to lugnet.robotics)
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