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.... http://pages.hotbot.com/family/coplin/images/cdv-play.zip 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. Cheers, Nick 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 [SMTP:rga24@hermes.cam.ac.uk] > Sent: Thursday, 18 May 2000 17:14 > To: cbm-hackers@dot.tcm.hut.fi > 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 > cbm-hackers-request@dot.tcm.hut.fi. ---------------------------------------------------------------- PLEASE TAKE NOTE: 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 cbm-hackers-request@dot.tcm.hut.fi.
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