SoundFont synth compatibility chart
 Share
The version of the browser you are using is no longer supported. Please upgrade to a supported browser.Dismiss

 
View only
 
 
Still loading...
ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
Audigy 2 ZSbismark bs-1/bs-16 v4.1DLSMusicDevice (Mac)FluidSynth 1.1.6Jeskola XS-1LinuxSampler 2.0.0sfzSynthFont2 v2.0.2.2Timidity++VirtualMIDISynth 1.16.0
2
1. volume envelopeattack is linearignores delay valuedecay incorrect
3
2. modulation envelopeattack is linear
attack is linear
wrong mod. amount
attack is linear
ignores delay value
attack is linear
attack is linear
attack curve
has initial jump
broken / not supported
4
3. key number to decayvalues are inverted
decay amount
too exaggerated
5
4. key number to hold
hold amount
too exaggerated
6
5. modulation LFO
not interpreting
values correctly
LFO starts at low
point instead of middle
not interpreting
values correctly
7
6. vibrato LFO
not interpreting
values correctly
LFO starts at low
point instead of middle
not interpreting
values correctly
8
7. mod wheel to vib LFO
9
8. scale tune / root key
10
9. filter cutoff
low cutoff = 100 Hz,
filter fully open at
8,000 Hz**
cutoff @ 20 Hz = fully
open, 50 Hz and up = correct
(test doesn't check 21-49 Hz)
filter fully open at
3,000 Hz
filter not very strong,
perhaps pole-1?
low cutoff = 100 Hz
filter @ 20,000 Hz
quieter than 17,500 Hz
filter fully open at
8,000 Hz
low cutoff = 100 Hz,
filter fully open at
8,000 Hz**
11
10. filter resonance
highest value = 20 dB
regardless of setting
highest value = 25 dB
regardless of setting
no attenuation at higher dB
not interpreting
values correctly
no attenuation at
higher dB
highest value = 25 dB
regardless of setting
no attenuation at
higher dB
highest value = 20 dB
regardless of setting
12
11. attenuation amount5 = 2 dB5 = 2 dB5 = 0.5 dB5 = 2 dB5 = 5 dBnot supported5 = 3 dB5 = 2 dB5 = 1.7 dB5 = 2 dB
13
12.a: default velocity to attenuation curve
(96 dB concave)
curve a bit too extreme
incorrect curveincorrect curveincorrect curve
14
12.b: vel-to-atten curve @ 144 dB concave
15
12.c: vel-to-atten curve @ 48 dB concave
16
12.d: vel-to-atten curve @ 96 dB linear
17
12.e: vel-to-atten curve modulator removed
18
13.a: default velocity to filter cutoff curve***
always has moderate
vel-to-fc curve applied****
vel-to-fc
not supported
no curve by
default***
vel-to-fc
not supported
always has moderate
vel-to-fc curve applied****
vel-to-fc
not supported
vel-to-fc
not supported
vel-to-fc
not supported
vel-to-fc
not supported
19
13.b: vel-to-fc custom curve
20
14. CC1 (mod wheel) to filter cutoff
21
15. sample offset
seems to be using
wrong values?
22
16. reverb
instrument reverb not
supported, only CC91
only active when
CC91 = 64 or higher?
instrument reverb not
supported, only CC91
instrument reverb not
supported, only CC91
23
17. chorus
instrument chorus not
supported, only CC93
only active when
CC93 = 64 or higher?
instrument chorus not
supported, only CC93
24
18. interpolation typehigh qualitylinearlinearhigh qualitylinear??high qualitylinearhigh qualitylinear
25
20. exclusive class
26
27
* - values are estimated
28
** - the filter doesn't seem to close any further than 100 Hz, regardless if it is set lower. The filter appears to be fully open at 8,000 Hz. There is no
audible difference between filter values 8,000 and 20,000 Hz.
29
*** - the Audigy is correct, but the default vel-to-fc modulator is strange, featuring a secondary modulation source (switch) that makes no sense.
FluidSynth is right, in my opinion, to leave a default curve out of their implementation, while allowing custom modulators to function normally.
30
**** - correct according to SoundFont 2.04 spec, but may cause compatibility issues with some SoundFonts due to Sound Blaster filters being fully
open at 8,000 Hz. This means that in instruments with high filter cutoff values (11-20 KHz), it is not possible to perceive the filter cutoff changing
with velocity on Sound Blaster hardware. My recommendation to SoundFont synth designers is to ignore the default velocity-to-filter cutoff modulator
altogether. Read more about this here:
31
SoundFont Synth Notes and Observations
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Loading...
 
 
 
Sheet1
Sheet2
Sheet3