Xref: utzoo comp.sys.amiga.audio:414 comp.sys.amiga.programmer:1729 Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!psuvax1!psuvm!dxb132 Organization: Penn State University Date: Sunday, 24 Mar 1991 11:33:24 EST From: Message-ID: <91083.113324DXB132@psuvm.psu.edu> Newsgroups: comp.sys.amiga.audio,comp.sys.amiga.programmer Subject: Re: 14-bit audio possible with the Amiga References: In article , mykes@sega0.SF-Bay.ORG (Mike Schwartz) says: >Since the Amiga audio hardware has an 8-bit DAC plus 6 bits of volume >for each audio voice, it should be trivial to play 14-bit samples. Using >Audio interrupts, you can feed audio data and volume right to the DACs >(it would use a lot of CPU on a 68000). Using another feature of the >hardware, you can have the output of one channel modulate the volume of >another. So it looks like you can use DMA to do 2 channels of 14-bit >sound. >Any feedback? It's certainly possible. It might not be "true" 14 bit, but certainly much better than 8 bit. The other way to do it is to set one channel's volume to 1 and another to 64 and just let the soft channel be the least significant bits of the 14 bit audio data. Do the same with the other two channels and you now have "15 bit" sound! Then use a non-real-time synthesis program and get an infinite number of simulatenous "voices" with 15 bit sound! (getting carried away now :-) -- Dan Babcock