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Forums > C64 Composing > Goattracker sound woes
2012-08-07 10:48
iLKke

Registered: May 2012
Posts: 13
Goattracker sound woes

Hey guys.

Every time I make a tune in Goattracker when I export it as .sid and play it, it sounds vastly different.

I've been bothering a couple of friends with it but nobody could help me out, so here I am.

I made a little example to illustrate the problem. This particular sng is supposed to be played at x2.

Here is an example what I hear in GT and then in sidplay2

Here is the goattracker2.71 song file

And here is my config:
Quote:
;------------------------------------------------------------------------ ------
;GT2 config file. Rows starting with ; are comments. Hexadecimal parameters are
;to be preceded with $ and decimal parameters with nothing.
;------------------------------------------------------------------------------

;reSID buffer length (in milliseconds)
100
;reSID mixing rate (in Hz)
44100
;Hardsid device number (0 = off)
0
;reSID model (0 = 6581, 1 = 8580)
1
;Timing mode (0 = PAL, 1 = NTSC)
0
;Packer/relocator fileformat (0 = SID, 1 = PRG, 2 = BIN)
0
;Packer/relocator player address
$1000
;Packer/relocator zeropage baseaddress
$fc
;Packer/relocator player type (0 = standard ... 3 = minimal)
0
;Key entry mode (0 = Protracker, 1 = DMC)
0
;Pattern highlight step size
4
;Speed multiplier (0 = 25Hz, 1 = 1X, 2 = 2X etc.)
2
;Use CatWeasel SID (0 = off, 1 = on)
0
;Hardrestart ADSR parameter
$ff00
;reSID interpolation (0 = off, 1 = on, 2 = distortion, 3 = distortion & on)
3
;Hexadecimal pattern display (0 = off, 1 = on)
0
;SID baseaddress
$d400
;Finevibrato mode (0 = off, 1 = on)
1
;Pulseskipping (0 = off, 1 = on)
1
;Realtime effect skipping (0 = off, 1 = on)
1
;Random reSID write delay in cycles (0 = off)
0
;Custom SID clock cycles per second (0 = use PAL/NTSC default)
0
;HardSID interactive mode buffer size (in milliseconds, 0 = maximum/no flush)
20
;HardSID playback mode buffer size (in milliseconds, 0 = maximum/no flush)
400
;reSID-fp distortion rate
0.500000
;reSID-fp distortion point
3300000.000000
;reSID-fp distortion CF threshold
0.000100
;reSID-fp type 3 base resistance
1147036.500000
;reSID-fp type 3 base offset
274228800.000000
;reSID-fp type 3 base steepness
1.006663
;reSID-fp type 3 minimum FET resistance
16125.155273
;reSID-fp type 4 k
5.500000
;reSID-fp type 4 b
20.000000
;reSID-fp voice nonlinearity
0.961316
;Window type (0 = window, 1 = fullscreen)
0
;Base pitch of A-4 in Hz (0 = use default frequencytable)
0.000000

I've been trying with different buffer and resid settings, but to no avail.

Since all the players (including Vice) seem to sound alike, I assume I'm doing something wrong with Goattracker. Still waiting for my 1541u so can't test on real hardware sadly.

Halp pls!

i
2012-08-07 13:48
cadaver

Registered: Feb 2002
Posts: 989
You're using out of range frequency values in the wavetable (for example F0 is not either a valid relative or absolute note.) These are not guaranteed to play the same in editor and in compiled player.

You're also using quite extreme relative note values, which may cause the relocator to bug and optimize the frequency table too aggressively. Try using the relocator option "disable optimizations".

2012-08-07 13:52
iLKke

Registered: May 2012
Posts: 13
Thanks, will try at once! \o/

I admit, I was poking random numbers in, looking for interesting borderline results.
2012-08-08 07:35
iLKke

Registered: May 2012
Posts: 13
Did both things you suggested and psid playback is almost identical now.

Thank you very much! \o/
2012-08-08 08:25
FATFrost

Registered: Sep 2003
Posts: 173
I had exactly the same problem.. Especially when I created an instrument and inserted the notes, but when I played them back it didn't sound the same...
2012-08-08 08:28
FATFrost

Registered: Sep 2003
Posts: 173
Hey!!! May 13th!!! We're bro's!!! Niiiice!!! ;)
2012-08-08 08:35
iLKke

Registered: May 2012
Posts: 13
Quote: Hey!!! May 13th!!! We're bro's!!! Niiiice!!! ;)

*highfives!*
2012-08-08 23:41
FATFrost

Registered: Sep 2003
Posts: 173
!! WYLD STALYONZ!!!!
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