1) The memory requirement of the Finite Impulse Response (FIR) filters is reduced without
compromising sound quality. There is increased performace of the 50.12Hz mode for machines
with relatively small L2 caches.
2) Added choice of two 50.12Hz modes. The large FIR mode performs best on large L2 caches
such as 4Mb. The multistage FIR mode performs best on smaller L2 caches.
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