Pure Data reverb abstraction based on "Simplified plate-class reverberation topology in the style of Griesinger" from the article "Effect Design, Part 1: Reverberator and Other Filters" by Jon Dattorro.
In order to make the implementation sample rate independent the fixed sample delay values in the figure in Dattorro's paper was converted by dividing the values with the suggested sample rate.
See conversion tables below where smp = delay in samples at sample rate 29761 hz and smp/29.761 the value in milliseconds used in the Pd abstraction.
| delay | smp | smp/29.761 |
|---|---|---|
| 13_14 | 142 | 4,77134 |
| 19_20 | 107 | 3,59530 |
| 15_16 | 379 | 12,7348 |
| 21_22 | 277 | 9,30748 |
| delay | smp | smp/29.761 |
|---|---|---|
| 23_24 | 672 | 22,57988 |
| 24_30 | 4453 | 149,62534 |
| 31_33 | 1800 | 60,48183 |
| 33_39 | 3720 | 124,99579 |
| delay | smp | smp/29.761 |
|---|---|---|
| 46_48 | 908 | 30,50972 |
| 48_54 | 4217 | 141,69550 |
| 55_59 | 2656 | 89,24431 |
| 59_63 | 3163 | 106,28003 |
| delay | smp | smp/29.761 |
|---|---|---|
| excursion | 16 | 0,53761 |
yl:
| delay | smp | smp/29.761 |
|---|---|---|
| 48_54 | + 266 | 8,93787 |
| 48_54 | + 2974 | 99,92943 |
| 55_59 | - 1913 | 64,27875 |
| 59_63 | + 1996 | 67,06763 |
| 24_30 | - 1990 | 66,86603 |
| 31_33 | - 187 | 6,28339 |
| 33_39 | - 1066 | 35,81868 |
yr:
| delay | smp | smp/29.761 |
|---|---|---|
| 24_30 | + 353 | 11,86116 |
| 24_30 | + 3627 | 121,87090 |
| 31_33 | - 1228 | 41,26205 |
| 33_39 | + 2673 | 89,81553 |
| 48_54 | - 2111 | 70,93175 |
| 55_59 | - 335 | 11,25634 |
| 59_63 | - 121 | 4,06572 |