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Jammer
Registered: Nov 2002
Posts: 1336 |
Event id #2967 : 25Hz Music Compo 2020
Welcome to the first and hopefully not the last edition of 25Hz Music Compo!
Basic premise is to create a piece of music with player that updates SID registers at rate of 25Hz or to put it in other words - every 2nd frame. There are very few tunes out there playing at such slow speed but maybe it's the right time to change it? :) Here are couple of examples:
Low Frequency
Half-Funk
Compo rules:
1. No covers and remixes allowed.
2. No upper limit for playtime.
3. No limit of tunes per author but playtime of each has to be at least 2 minutes.
4. Use any editor that allows you to use such playback rate or go for custom player if you need. Goat Tracker surely offers 25Hz playback (Multispeed 0).
Good luck and have fun! <3 |
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Conrad
Registered: Nov 2006
Posts: 849 |
Quote: Presume SID Wizard can do half speed :)
Unfortunately not.
But you could go into Vice monitor and add a quick hack like this:
a 0380:
.0380:
lda #$00
eor #$80
sta $0381
bmi $038c
jsr $10d3 <-- (this is the address shown in the "Normal" configuration, might be different on light / bare / extra)
rts
a 1003
.1003:
jmp $0380
... or beg Hermit for another version. ;) |
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Jammer
Registered: Nov 2002
Posts: 1336 |
Little question:
Should we allow 25Hz stereo tunes in competition? What do you think, guys? :) |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
Quote: Little question:
Should we allow 25Hz stereo tunes in competition? What do you think, guys? :)
With some smart timing you get 50Hz! |
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Mibri
Registered: Feb 2018
Posts: 214 |
Quote: Little question:
Should we allow 25Hz stereo tunes in competition? What do you think, guys? :)
I don't see why not - I think voters should be able to account for certain tunes being 2SID efforts and adjust their scores according to how tastefully/lazily the additional channels are used.
Recent-ish CSDb music compos (like the Ambient and What's Up Cover compos) allowed 2SID and this made for some cool and interesting entries, so I think as long as 0.5x speed is adhered to, we're all good. :) |
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CreaMD
Registered: Dec 2001
Posts: 3058 |
I wonder, how would 25hz multispeed tune sound ;-)
Also if Sidwave is right, and Hubbard did 18 tunes in 25hz, that might quite explain his unique Hubbardish sound which two example tunes reminds me of, sort of. |
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tlr
Registered: Sep 2003
Posts: 1791 |
Quoting CreaMDAlso if Sidwave is right, and Hubbard did 18 tunes in 25hz, that might quite explain his unique Hubbardish sound which two example tunes reminds me of, sort of.
18 tunes, any suggestions? |
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deetsay
Registered: Aug 2005
Posts: 43 |
Not sure if this is obvious to everyone, but I suppose it should be possible to do this semi-acceptably with any editor.
1. Use a tempo that can be halved (such as 6)
2. When it's (almost) done, make it twice faster (such as 3)
3. Try to fix portamentos and filter sweeps and stuff at the fast speed.
4. Call the player every other frame. |
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Jammer
Registered: Nov 2002
Posts: 1336 |
Deetsay's method seems universal for all editors but you have to compile tune to hear final result, still ;)
@CreamD I'm not sure if older Hubbard's tunes were entirely 25Hz or had e.g. bassline changing pulsemod at that rate. His Last V8 or Human Race bass sound is surely half speed work. |
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deetsay
Registered: Aug 2005
Posts: 43 |
Hmm, I tried it. Some fixes/amendments to the method are in order: ;-)
1. Use a tempo that can be halved (such as 6)
2. Make every line in all wavetables as double.
3. When it's (almost) done, make it twice faster (such as 3)
(This makes the music a total mess, not really reasonable to fix anything in the fast version)
4. Remove all the double lines from the wavetables. (and double all filter and pulse sweep values!)
5. Call the player every other frame.
6. Hope for some happy accidents!
...but really some of the 25hz sounds are awesome. A supporting or modified editor or anything that lets you design them properly is a better idea. But this will work in an emergency. |
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Jammer
Registered: Nov 2002
Posts: 1336 |
And we have first contestant!
Webchat
Yay! \o/ |
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