Subject:
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Re: NXT Sound Sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 5 May 2006 21:59:11 GMT
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Viewed:
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2568 times
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In lugnet.robotics, Brian Davis wrote:
>
> Using the NXT as a tuning fork is right out, as far as I can see. The
> electronics might be up for it, but there are too many other complicating
> issues.
Hmmm is there a "raw data" mode for the sound sensor? Seems to me, it may be
possible (maybe not yet but one day) to write a program that does FFT analysis,
as long as it can get the raw wave data from the sensor.
I'm assuming the "tone mode" does something along those lines in hardware, but
it sounds (oops sorry pun) like it may be a little limited.
ROSCO
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Message has 2 Replies:
 | | Re: NXT Sound Sensor
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| (...) The raw mode still just returns one number - essentially the integrated sound energy, where the weighting function is determined by the sensor mode (dB or dBA) and is all done on-board the sound sensor itself, not in the NXT. (...) You only (...) (18 years ago, 5-May-06, to lugnet.robotics)
| | | Re: NXT Sound Sensor
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| (...) There is a curious 6th wire connection from the sound sensor which sends analog sound to the CPU. I am assuming that using some 3rd party firmware, it might be possible to digitize and process sound data. But I think turning the CPU into a DSP (...) (18 years ago, 6-May-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: NXT Sound Sensor
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| (...) Which it does pretty well, maxing out around 100 dB. (...) Not as much (yet!) as I'd like. The sound sensor has two modes familier to folks who work with dB noise levels. One is a "flat" frequency response curve, and one is a frequency (...) (18 years ago, 5-May-06, to lugnet.robotics)
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