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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Play DIGI-Sound with SID-Waveforms?
Would it be theoretically possible to convert
simple 4-bit samples / 6-kHz (or something other that SID likes)
to wavetables?
Maybe a PC-tool could do this job: Analyze somehow the sample (different frequences...and so on), and give the right c64 waveforms + parameters (pulse width..)
and finally If we had a high enough speed (4x - 8x) there will be a kind of digi-output... I hope :)
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
Wavetables ARE looped samples. The SID is no wavetable device. |
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algorithm
Registered: May 2002
Posts: 702 |
That would be quite a tough job. AFAIK, C64 has 4 main waveforms, some of these might be combined (on new c64 sid?). if a c64 music routine is updated every frame (with new waveform, filter value etc) a routine can probably be created where 256-512 block digital samples are analysed and according to the type of data in the sound is replaced with a c64 waveform, but would most probably result in mush.
Better to attempt to recreate it by hand. Use of ring modulation/filters etc a lot of pseudo sample's can be achieved (metallic clangs, robotic vocal sounds, etc) |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Create sounds by hand for more than 2x-speed is a very painful work. By using Ringmod.,or Sync... you will lose a channel...
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algorithm
Registered: May 2002
Posts: 702 |
One idea for non software conversion (partly) would be to divide the audio instrument sample into chunks (eg. 22050hz / 50 frames would be around 440 byte samples.
then listen to each chunk looped and put the relevant value (eg timbre, pitch, approximate closest sounding waveform) into the music editor |
