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Originally Posted by Warp69  Casey described a constant density plate algorithm in another thread - not exactly like an EMT250, but similar. |
Yep. I consider the "constant density" to refer to the fact that the echo density would not increase with time. This is found in algorithms with parallel combs with no cross coupling and no embedded or nested allpasses. The original Schroeder algorithms were constant density, as well as the EMT250-esque algorithm Casey describes. The "plate" implies a fairly high echo density, which can be realized in a number of ways - lots of output taps, series allpasses, lots of parallel combs, etc.
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Not many algorithms from the 224 has survived - only the Concert Hall?
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I am unsure how much later plates and chambers have in common with the 224XL. As far as the original 224 (no X or XL), apparently these algorithms sound fairly different from the 224XL. One of the Concert Hall algorithms in the 224XL is apparently the same as the original 224 Concert Hall. Some of the other 224XL Concert Halls seem to add chorusing to additional locations within the algorithm (Dark Hall), which implies that the 224XL had a few more cycles than the original 224.
Sean