RE: Converting/Playing WAV files

From: COPLIN, Nicholas. (
Date: 2000-05-24 08:38:19

Hi All, and thanks for the various bits of information....

I have added a zip of some of the tools necessary and a D64 image of the
"simple" player and three examples at this link....

The player is very simple, and works best with the old C64 with the
different volume/filter setup (sorry Richard, didn't have time to experiment
with the tricks you mentioned - do you have specific values?)

Also the files do not use any compression and are simple 4bit lo/hi...
something to do in a later version perhaps.


PS: Someone mentioned the RAW format (there is a player for GEOS too!) is
this also a 4bit lo/hi digital format?

> -----Original Message-----
> From:	Richard Atkinson []
> Sent:	Thursday, 18 May 2000 17:14
> To:
> Subject:	RE: Converting/Playing WAV files
> On Thu, 18 May 2000, Marko Mäkelä wrote:
> > Yep, basically you use the master volume register (the low nybble of
> > $d418) as a 4-bit D/A converter.  It works, because the master volume
> > control also amplifies the DC bias offset (which probably wasn't
> intended,
> > and the amplification was reduced in the 85xx series SID, which makes
> > digital samples play very quiet on newer C64s).
> Although, contrary to popular belief, you can actually do something about
> this in software - to make samples play loud on all C64s, generate some
> additional DC offset by setting each oscillator to 0 pulse width and
> turning them on with pulse waveform, maximum sustain.
> It might also be possible to get some extra offset with certain filter
> settings.
> Richard
> -
> This message was sent through the cbm-hackers mailing list.
> To unsubscribe: echo unsubscribe | mail

The contents of this email (including any attachments) may be 
privileged and confidential. Any unauthorised use of the contents
is expressly prohibited.  If you have received this email in error,
please advise us immediately (you can contact us by telephone 
on +61 8 9441 2311 by reverse charge) and then permanently 
delete this email together with any attachments. We appreciate 
your cooperation.
Whilst Orbital endeavours to take reasonable care to ensure 
that this email and any  attachments are free from viruses or other
defects, Orbital does not represent or warrant that such are free from 
computer viruses or other defects.

(C) 2000: Orbital Engine Company (Australia) Pty Ltd and its affiliates
This message was sent through the cbm-hackers mailing list.
To unsubscribe: echo unsubscribe | mail

Archive generated by hypermail 2.1.1.