Re: [PSUBS-MAILIST] Miscellanous ideas

[peter mckellar <mckellar@earthlink.net>]

The music industry could help here

a guitarist can play a certain preprogrammed sequence and a cascade of effects can be invoked.  many off-the-shelf music (or speech recognition) packages will allow u to record a sound and match to it.  a speech recognition package i got free with a soundblaster card would fire off any desired sequence of programs if a combination of sounds was heard.  

another way to get a general match to a 'generic' sound (eg an outboard motor) would be to feed the signals through a simple neural network program.  these are pretty easy to write and you just feed it recordings to teach it.  provided examples can slew results though.  just be careful it doesnt learn to pick a certain manufacturer's motor or just outboards fitted to a certain type of boat.

hope this helps
peter

-------Original Message-------
From: Warren Greenway <opensourcesub@yahoo.com>
Sent: 03/28/03 11:35 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Miscellanous ideas

> 
> You could actually record a signature of a speed boat,
and use a Fourier WaveForm analysis to match the
waveforms and set off an alarm. I don't actually claim
to understand Fourier analysis, but the algorithms
are readily available.

Warren.

--- Michael B Holt <tlohm@juno.com> wrote:
> 
> On Thu, 27 Mar 2003 15:41:20 1100 (UTC) peter 
> mckellar  writes:
> >
> >maybe not a workable idea at present, still its
> more thoughts to 
> >consider.  btw i LOVE the collision detection
> software idea :))
> 
> One idea I've kicked around more than once is a
> hydrophone
> that would listen for certain frequencies and sound
> an alarm
> when they were detected.    What I had in mind for
> this was to
> listen for a sound or sounds that are characteristic
> of all
> outboards.   Since most of us will be operating in
> waters 
> that have lots of outboard traffic, the idea seemed
> a natural
> one.
> 
> I presume the sounds of the lower unit gears would
> be what
> the gadget would listen for.
> 
> 
> 
> Mike
> 
> 
>
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