MOLNARRM@UREGINA1.BITNET (02/03/89)
Well I was wasting time in Radio Shack yesterday when I found they had 8 bit analog to digital converters for $10 apiece. I dont have much electronics background, but I have seen a few sound digitizers, and it seems to me they are relatively simple to make ( well compared to a LUCAS board anyways.) So I was wondering if some kind soul out there might direct me to PD schematics of a sound digitizer. Has anyone used the Radio Shack 8-bit A/D chip? Could you post your info to comp.sys.amiga? Thanks in Advance Dennis Gorrie <MOLNARRM AT UREGINA1.BITNET> ' Chain-Saw Tag... Try it... You'll like it!! '
ranjit@ENIAC.SEAS.UPENN.EDU (02/04/89)
----------------------------Original message---------------------------- >If it's any encouragement, at least one commercial digitizer >(MacRecorder from some company in Berkeley) uses that cheap >radio shack chip. Last october or so they were on sale, so I >bought one for $3 - but I haven't done a thing with it. > > -ranjit > > >-- > >Trespassers w" ranjit@eniac.seas.upenn.edu mailrus!eecae!netnews!eniac!... It seems to me it must be the same chip used in the TAndy 1000 SL and TL for sound digitizing. Therefore there should be a cheap way to implement it as an Amiga digitizer. Dennis Gorrie <molnarrm at uregina1.bitnet>
johnhlee@cory.Berkeley.EDU (John Lee) (02/07/89)
In article <8902040004.AA00952@jade.berkeley.edu< MOLNARRM@UREGINA1.BITNET writes:
<Well I was wasting time in Radio Shack yesterday when I found they had
<8 bit analog to digital converters for $10 apiece. I dont have much
<electronics background, but I have seen a few sound digitizers, and it
<seems to me they are relatively simple to make ( well compared to a LUCAS
<board anyways.) So I was wondering if some kind soul out there might
<direct me to PD schematics of a sound digitizer. Has anyone used the
<Radio Shack 8-bit A/D chip? Could you post your info to comp.sys.amiga?
<
<Thanks in Advance
<
<Dennis Gorrie <MOLNARRM AT UREGINA1.BITNET>
<
<' Chain-Saw Tag... Try it... You'll like it!! '
Hmmmm. If it's the same chip I think it is, I don't think you can use
it for a sound digitizer. If it's a 8-pin package, then I believe the
chip communicates serially, and it digitizes at too slow a rate for a
decent sound sample (it think it works at well below the 10kHz.) I looked
at this chip when I was designing my sound digitizer. I finally used a
ADC0809 that I happened to have, but I had to push its clock to ~1.5x its
rated max before it would sample at 40kHz (kids, don't try this at home.)
It's actually relatively simple. If there's a demand, I may post my
schematics; but then again, I may not--it's such a kludge!
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UUCP: ...!ucbvax!cory!johnhleeMOLNARRM@UREGINA1.BITNET (Dennis Gorrie) (02/15/89)
Thanks very much for the sound digitizer plans! Do you have any idea how to get in touch with the designer, Jamie C. Mueller on Genie? I was just wondering, as I think it would be neat to try and add stereo digitizing to it. I have been looking at the plans for a while now. I plan to buy the parts as soon as I get my next pay check :-) . I wanted to ask, what kind of packaging did you put it in? Also, do you know if 100k pots with adjusting knobs exist? I guess I will have to look around for one. Last thing. I have an A1000, and the pin out for my parallel port is different from an a500. Could anyone send me the parallel connector pin outs for an A500? (Three columns: PIN, NAME, DESCRIPTION ) The pins concerned are 2,3,4,5,6,7,8,9,10,14,25. But I would like the WHOLE A500 pinout for future reference. Thanks in Advance |============================================================================| | (patient) Go ahead doc, tell me the worst. | | (doctor) I'm sorry, but you have MS-DOS... | | (patient) MS-DOS?? ...Maybe I caught it from a toilet seat or something.| | | | Dennis Gorrie (molnarrm at uregina1.bitnet) | |============================================================================|
MOLNARRM@UREGINA1.BITNET (Dennis Gorrie) (02/16/89)
Someone heard my pleas for help, and sent plans for a sound digitizer! It is supposed to work with Perfect Sound software. I have NOT built it yet, but if you want, I can TRY to send the UUencoded plans to anyone that wants them. Thanks again to all of you that responded with helpful sugestions! |============================================================================| | (patient) Go ahead doc, tell me the worst. | | (doctor) I'm sorry, but you have MS-DOS... | | (patient) MS-DOS?? ...Maybe I caught it from a toilet seat or something.| | | | Dennis Gorrie (molnarrm at uregina1.bitnet) | |============================================================================|
bty00298@uxa.cso.uiuc.edu (02/18/89)
Sorry to waste bandwidth, but I can't seem to mail directly to you. I would be very interested in such plans! It would probably easiest to post the plans to comp.binaries.amiga so everyone could get a copy. ============================================================================ Brian Yamanaka University of Illinois - Urbana/Champaign
wdao@sal11.usc.edu (Walter Dao) (03/10/89)
A sort time ago, sombody said that there was a file describing how to build a sound digitiser. well, could somebody send me that set of files ? d.w
admiral%m-5@Sun.COM (Michael Limprecht SUN Microsystems Mt. View Ca.) (03/11/89)
In article <2995@nunki.usc.edu>, wdao@sal11.usc.edu (Walter Dao) writes: > A sort time ago, > sombody said that there was a file describing how to build a sound digitiser. > well, > could somebody send me that set of files ? > > d.w Me too! Thanks.
lphillips@lpami.wimsey.bc.ca (Larry Phillips) (03/12/89)
In <93403@sun.uucp>, admiral%m-5@Sun.COM (Michael Limprecht SUN Microsystems Mt. View Ca.) writes: >According to the International B.M. manual, REXX stands for REstructured >eXecutor Extended language. As I mentioned, I knew there was a supposed acronym, but it was probably crammed into fitting after the fact. Cowlishaw makes no mention of it standing for anything. This sounds like a typical IBM thing. DMF = Data Migration Facility. Most folks call it a cable. -larry -- Frisbeetarianism: The belief that when you die, your soul goes up on the roof and gets stuck. +----------------------------------------------------------------------+ | // Larry Phillips | | \X/ lphillips@lpami.wimsey.bc.ca or uunet!van-bc!lpami!lphillips | | COMPUSERVE: 76703,4322 | +----------------------------------------------------------------------+