how did Tao do this?

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how did Tao do this?

Postby Gunstick » Mon Jan 21, 2008 10:03 pm

Hi

please explain how this works?
http://www.youtube.com/watch?v=h5x1hWBexG8


Thanks,
Georges

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Nyh
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Re: how did Tao do this?

Postby Nyh » Mon Jan 21, 2008 11:20 pm

Gunstick wrote:please explain how this works?
http://www.youtube.com/watch?v=h5x1hWBexG8

What is so special about this screen?
Low res, pixels with rasters and a mouse cursor. Nice musix.

Hans Wessels

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alexh
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Re: how did Tao do this?

Postby alexh » Tue Jan 22, 2008 12:12 am

Gunstick is talking about the music effects.
End credits part featuring incredible music from TAO using sync buzzer effect and emulates a kind of analog band pass filter! Unbelievable!

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Re: how did Tao do this?

Postby NiceGuyUK » Tue Jan 22, 2008 11:24 am

DMA trickery. The music (like most of the Nostalgic Demo tunes) is in his new TSD format. From the Cream website :-

Cream wrote:TSD
TSD is a DMA-based format. It emulates the main features of the C64 SID-soundchip. Songs using this player have been first used in "...do things. These songs can be replayed using "Jam".


The website has a link to a ZIP full of TSD songs for playing in JAM
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Re: how did Tao do this?

Postby Nyh » Tue Jan 22, 2008 12:08 pm

alexh wrote:Gunstick is talking about the music effects.

I should have known. I didn't see this was a post in YM rocking. Some nice musix indeed!

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Re: how did Tao do this?

Postby Gunstick » Tue Jan 22, 2008 6:04 pm

NiceGuyUK wrote:DMA trickery.


yeah, so... any more details?
This is just explaining one mystery with another :-)

Georges

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Re: how did Tao do this?

Postby Stefan jL » Thu Jan 24, 2008 7:33 pm

NiceGuyUK wrote:DMA trickery. The music (like most of the Nostalgic Demo tunes) is in his new TSD format. From the Cream website :-


That tune is not using DMA it's a standard ST/YM2149 tune with the sync-buzzer effect.
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Re: how did Tao do this?

Postby Gunstick » Fri Jan 25, 2008 11:15 pm

Stefan jL wrote:That tune is not using DMA it's a standard ST/YM2149 tune with the sync-buzzer effect.


nice, but that was already written in the youtube description. So I guess I wait for Leonard to come along and give me the technoguru explanation :-)

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Re: how did Tao do this?

Postby Stefan jL » Fri Jan 25, 2008 11:27 pm

Gunstick wrote:nice, but that was already written in the youtube description.


Yes, but that was just a reply to NiceGuyUK comment as he did not understand :wink:
Why not try to contact Tao directly: http://www.creamhq.de/
Or other Sync-Buzzer guy's (like GwEm) http://www.preromanbritain.com/maxymiser/
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Re: how did Tao do this?

Postby lotek_style » Fri Feb 01, 2008 10:38 pm

Gunstick:

TSD is a DMA-based format. It emulates the main features of the C64 SID-soundchip.

For deeper technical stuff you should mail TAO directly: Tao [FuckSpamBots] creamhq.de
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Re: how did Tao do this?

Postby lotek_style » Fri Feb 01, 2008 10:41 pm

Maybe this might bring some light into the syncbuzzer technique... as far as I know he discovered it by mistake :)

http://www.myatari.net/issues/may2003/tao.htm
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Re: how did Tao do this?

Postby Twilighte » Sat Jan 03, 2009 12:54 pm

lotek_style wrote:Maybe this might bring some light into the syncbuzzer technique... as far as I know he discovered it by mistake

http://www.myatari.net/issues/may2003/tao.htm


It might have done had that link worked but perhaps it just expired.
Anywayz, i'm very new to this forum having wollowed in the Oric for too long. :S
But back to Tao, i reckon Buzzer acts on the EG cycle register. Because the register uniquely triggers the envelope everytime it is written to, by writing alternate values at the frequency of the note, it is possible to create complex waveforms.
Or even just a single value that defines a slope envelope would be enough to produce interesting sounds by then modifying the EG period. :)

Not sure if my terminology is up to scratch with Atari ym stuff since i am much more familiar with the AY-8912 of the Oric. :P

Incidentally i emailed tao about a week ago but as yet no reply. :(

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Re: how did Tao do this?

Postby lotek_style » Sat Jan 03, 2009 1:11 pm

Hm well first... the article worked perfectly one year ago when I wrote the post :)

well here's archive org:

http://web.archive.org/web/200801202051 ... 03/tao.htm


Tao didn't reply to any of my mails since weeks... I'm not sure if he's still reading the mails
or if he's just too busy.
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Re: how did Tao do this?

Postby Twilighte » Sat Jan 03, 2009 2:19 pm

Well that interview was very interesting but unfortuately it did not give any insight into how sync-buzzer or buzzer works. :(

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Re: how did Tao do this?

Postby Gunstick » Fri Feb 20, 2009 10:28 pm

Well you may be right. As we found out here: viewtopic.php?f=68&t=3306&st=0&sk=t&sd=a&start=15#p35126
writing the envelope form register (register 13) restarts the envelope even if the written value is the same already there. So if we take the SID interrupt, but instead of switching on/off the volume we do a similar thing on the envelope there are interesting waveforms to create.


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