Subject:
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Re: play wav files on HB
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 18 Aug 2000 08:29:01 GMT
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Original-From:
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John Hatton <john.hatton@NOMORESPAMuk.airsysatm.thomson-csf.com>
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Viewed:
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1488 times
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What I was actually wondering was whether there was a utility that could
convert small wav files (only a couple of seconds or so) into a format
playable by the hb, possibly using the existing tone functions using some
form of sampling. The intended use is for a small audio warning, either vocal
(obviously it would be very poor quality) or an audio tune, and as my musical
talents are nonexistant being able to convert a wav file into a tone()
compatible format would be better.
Any ideas ?
Thanks in advance
John Hatton
johnhatton@email.com
Jerry Normandin wrote:
> Wait..
>
> With only 16k available for a program I'd rather save room for my
> application.
>
> But...
>
> I bet you can Pulse width modulate a digital output pin, drive an
> amplifier and feed that through a speaker. Down sample an 8 bit
> sound file to one bit (Yes this works) and if you pulse width modulate
> the pin you will hear sound. I wrote code to do this MANY years
> ago and used a "State of the Art" 8Hhz IBM PC.
> I'll check to see if I still have the code. It is in assembler of course.
> This will use a massive amount of precious CPU time.
>
> Another old solution from the past.. when I was in college,
> is to sample raw 8bit, 8khz samples, store them in a rom,
> and clock the phrases out through a DAC.
>
> John Hatton wrote:
>
> > I've seen mentioned in the last few weeks something about playing wav
> > files on the hb, is this using the standard hardware or is there a
> > utility that can convert small wav files into a format playable by the
> > hb. I have gotten as far as playing the pink panther tune from the
> > music.c file in the IC2.x library but a wav file seems a bit out of this
> > particular programs league.
> > Any information would be appreciated.
> >
> > Thanks.
> >
> > John Hatton
> > johnhatton@email.com
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Message is in Reply To:
 | | play wav files on HB
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| I've seen mentioned in the last few weeks something about playing wav files on the hb, is this using the standard hardware or is there a utility that can convert small wav files into a format playable by the hb. I have gotten as far as playing the (...) (26 years ago, 17-Aug-00, to lugnet.robotics.handyboard)
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