General Category > LisaList2
Video about Lisa sound
kewatsdop:
I posted a video about sound in Apple Lisa. It may be of interest to the readers of this forum.
The video would have not been possible without Ray's and Tom's help here, so thank you both for helping me a couple of months ago, and I have given you both credit in the video.
Based on what I've learnt, I see a huge potential to experiment with sound and maybe even grow a niche music demoscene around Apple Lisa. For that, due to the rarity of the Lisa, an emulator with faithful Lisa sound subsystem representation is needed, so I'm really looking forward to fixes to the LisaEm which would allow advanced experimentation with sound (in particular polyphony, richer basses, very low-duty square wave). I will be happy to support with tests and comparisons to a physical Lisa.
Once again thank you for the amazing suport here, and I'm hoping to contribute to this forum someday at least a fraction of what I've taken!
The video is here: https://youtu.be/zKRgtbadZ_U
There's also an accompanying article here: http://forgottencomputer.com/retro/sound/#applelisa
rayarachelian:
--- Quote from: kewatsdop on April 12, 2022, 03:04:18 am ---I posted a video about sound in Apple Lisa. It may be of interest to the readers of this forum.
The video would have not been possible without Ray's and Tom's help here, so thank you both for helping me a couple of months ago, and I have given you both credit in the video.
Based on what I've learnt, I see a huge potential to experiment with sound and maybe even grow a niche music demoscene around Apple Lisa. For that, due to the rarity of the Lisa, an emulator with faithful Lisa sound subsystem representation is needed, so I'm really looking forward to fixes to the LisaEm which would allow advanced experimentation with sound (in particular polyphony, richer basses, very low-duty square wave). I will be happy to support with tests and comparisons to a physical Lisa.
Once again thank you for the amazing suport here, and I'm hoping to contribute to this forum someday at least a fraction of what I've taken!
The video is here: https://youtu.be/zKRgtbadZ_U
There's also an accompanying article here: http://forgottencomputer.com/retro/sound/#applelisa
--- End quote ---
That's very impressive. Thanks for this.
I've recently pushed code for RC4, give it a try and see if it works any better. The sound delay bits should be fixed now, though I'm not sure if the frequencies still work exactly the same as on a physical Lisa - this might be slightly off now, not sure. I'll have to test against a real Lisa again to ensure it's the same. Let me know if there's anything else that needs tweaking to get the sound to match.
kewatsdop:
Ha! I didn't realize the most recent update had this fix in. Thank you! Of course I'll try it ASAP and will let you know.
stepleton:
Congratulations on your study of Lisa audio! I'm fairly confident in guessing that you've experienced the most complicated sound ever to come out of a stock Lisa :-) I think you are absolutely right and that things can be pushed quite a bit further --- maybe even fuzzy-sounding audio sample playback is possible.
(Thanks for the shout-out, too!)
blusnowkitty:
--- Quote from: stepleton on April 12, 2022, 03:15:30 pm ---I think you are absolutely right and that things can be pushed quite a bit further --- maybe even fuzzy-sounding audio sample playback is possible.
--- End quote ---
if a 4.77MHz IBM 5150 can push 4-channel Amiga modules down the PC Speaker, there's no reason a Lisa can't do the same thing...
Navigation
[0] Message Index
[#] Next page
Go to full version