 | | Range of RCX sound production
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In the "what other weird questions can Brian Davis come up with", here's one I've not been able to locate on any website (including the Mindstorms Internals site), and I can't test it easily with my ear: What's the frequency range for the RCX sound (...) (20 years ago, 18-Aug-04, to lugnet.robotics)
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| | Re: Range of RCX sound production
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Hi Brian, I find your question very interesting. I do not have an audio analyzer, but I have a few ideas so you can extend your hunt. I'm told that you can get software that lets you use your sound card as an oscilliscope. All you need is a (...) (20 years ago, 18-Aug-04, to lugnet.robotics)
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| | Re: Range of RCX sound production
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Hi Brian, I examined the RCX ROM sound routine, and it provides a lower bound of frequency 31 (matches what your ears told you), and an upper bound of 20000 (also as you noticed). I'm not sure about the sound hardware, but you might be able higher (...) (20 years ago, 18-Aug-04, to lugnet.robotics)
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| | Re: Range of RCX sound production
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but a microphone was its own frequency curve in which you need to compensate. ----- Original Message ----- From: "Kevin L. Clague" <kevin_clague@yahoo.com> To: <lego-robotics@crynwr.com> Sent: Wednesday, August 18, 2004 12:56 PM Subject: Re: Range (...) (20 years ago, 18-Aug-04, to lugnet.robotics)
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| | Re: Range of RCX sound production
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(...) Wow! Thanks for verifying my ears <grin>. BTW, where is the Kekoa Proudfoot's ROM description of this (is it on the Mindstorms Internals page, and I just missed it)? (...) Thanks, and for what I had in mind, it was not worth hacking H8 code (...) (20 years ago, 18-Aug-04, to lugnet.robotics)
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| | Re: Range of RCX sound production
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(...) Here it is. (URL) (...) You're welcome, Kevin (20 years ago, 19-Aug-04, to lugnet.robotics)
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