ADSR Parameters

AR	Time from 0 to 1
0	4.1s
1	2.6s
2	1.5s
3	1.0s
4	640ms
5	380ms
6	260ms
7	160ms
8	96ms
9	64ms
A	40ms
B	24ms
C	16ms
D	10ms
E	6ms
F	0ms

DR	Time from 1 to SL
0	1.2s
1	740ms
2	440ms
3	290ms
4	180ms
5	110ms
6	74ms
7	37ms

SL	Ratio
0	1/8
1	2/8
2	3/8
3	4/8
4	5/8
5	6/8
6	7/8
7	1

SR	Time from 0 to 1
0	Infinite
1	38s
2	28s
3	24s
4	19s
5	14s
6	12s
7	9.4s
8	7.1s
9	5.9s
A	4.7s
B	3.5s
C	2.9s
D	2.4s
E	1.8s
F	1.5s
10	1.2s
11	880ms
12	740ms
13	590ms
14	440ms
15	370ms
16	290ms
17	220ms
18	180ms
19	150ms
1A	110ms
1B	92ms
1C	74ms
1D	55ms
1E	37ms
1F	18ms

Reference

• Table 3-7-2 on page 3-7-3 of Book I of the official Super Nintendo development manual