Boogie Town

[Ral-Clan]

Those are good A500 demos by that group - including this one:
http://www.youtube.com/watch?v=rbFndrip_KM

But I wonder ... how are they getting such crisp audio from the Amiga?  The audio tracks don't have the Paula 8-bit sound at all.

[Ral-Clan]

That's not running on an A500 though (it requires AGA and a 060 cpu is preferred)

That demo uses the old 14bit-audio trick, and it's actually playing a streaming adpcm-track instead of a traditional mod-file.

Ah!  I wondered about the 14-bit audio trick, but I didn't realise it was that crisp.  Also, I thought I heard stereo panning, which I didn't think was possible with the 14-bit audio trick.  Maybe it was mono, though.

So, was the PCM track composed at all on an Amiga?  I'm assuming with a PCM audio track, this demo does not fit on a single floppy!

[Ral-Clan]

With 14 bits you get 2 channels, so yes, it's in stereo


To be honest, I don't know what the track was composed on, I got it from Jazzcat as an mp3-file and converted that to adpcm. And no, the demo most certainly doesn't fit on a single floppy as it requires several megabytes of diskspace.

Oh, okay.  One more question: does this demo run on an unexpanded A500 (i.e. 68000 CPU)?  Because if it only requires several megabytes of diskspace then I assume it's unpacking the audio on the fly (rather than working from uncompressed PCM music - which would take dozens of Megabytes).  I'm just wondering how you accomplished that.