From: James Shanks (n1vbn@bit-net.com)
Date: Thu May 01 2003 - 18:33:32 PDT
Good Lord!!!
Sounds like a way to really rattle the Cop that pulls you over at
night........."All right Kid .....Where's the Monster truck I heard you
running??"
Sicko that I am ""I LIKE IT"!!!!
James Shanks
n1vbn@bit-net.com
1998 IMZ 8.103
1984 H-D FLHT-C
At 07:53 PM 5/1/2003 -0700, Patrick Jankowiak wrote:
>Hmm.. nice project.
>
>1. record the sound of the truck being driven from a stop to full
>speed.
>
>2. put the sound into a computer file.
>
>3. select parts of the file, one for each additional 5 RPM off idle,
>and put each into a smaller file. These files would consist of short
>segments of digitzed sound. actually, only a couple of engine
>revolutions would be needed to make up these files each. The files
>format should be uncompressed digitzed 16 bit audio. Each file would
>represent the sound of the engine at a particular RPM from say
>700-2650. That is alot of files but if you want to do it right.. All
>the files should be the same length datawise, so it will simplify
>programming.
>
>3A. if you want stereo, you do two file processes from your stereo
>source.
>
>4. Put the files sequentially into a EPROM memory.
>
>5. Put the PROM into a small circuit with some RAM and a CPU such as
>an ARM.
>
>6. connect an output from an RPM sensor on the honda to one of the
>small computer circuit's inputs.
>
>7. Write the code (also stored in the EPROM so that when the circuit
>boots, the sound files are loaded into the RAM chip. Once booted, the
>CPU detects the RPM (and adjusts for the RPM range) and outputs the
>appropriate file segment to an output which is connected to a DAC (or
>DACs). Connect the DAC to the 250 watt car stereo. Be sure to also use
>a PA speaker, or several, mounted under the hood of the honda as well.
>
>Well, I am not going to do it. Any rocket scientists in the group?
>
>
>
>
>
>Paintball Plus wrote:
> >
> > That doesn't compare to having a digital recording of a turbo whistler
> > synchronized to the engine rpm of your Honda, played through a 250 watt
> > PA system. That's over the top!
> > Bruce
> >
> > Walter Houghton wrote:
> >
> > >I was reading the list in the latest issue of the MV mag on the signs of
> > >when your hobbie is getting out of hand. There was no mention of
> listening
> > >to recordings of driving a 5 ton with a turbo, while driving your pickup
> > >during the winter months.
> > >
> > >Not that I would do this......................it messes up my shift patern
> > >in my Dakota.
> > >
> > >Jeff
> > >
> > >
> > >===Mil-Veh is a member-supported mailing list===
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> > >
> > >
> > >
> >
> > --
> > Bruce Kalin (Convoy Coordinator)
> > The Largest Historic Military Vehicle Convoy in US History
> > http://www.trackpads.com/webs/bkalin/convoy.html
> > bkalin@trackpads.com
> >
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>===Mil-Veh is a member-supported mailing list===
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James Shanks
n1vbn@bit-net.com
1998 IMZ 8.103
1984 H-D FLHT-C
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