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processing question

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processing question

Subject: processing question
From: Brian Davies <email@hidden>
Date: Fri, 5 Jun 2009 22:56:10 +1000

Any help appreciated on the following:

How does an AU read ahead N samples ahead of its output (if it uses an FFT-inverse FFT pair, for example) and not loose any of the data at either end? ie, if the host wants samples from L to M processed, in blocks of size B, the AU needs to read to at least L + B + N - 1 before it can output from L to L + B - 1, and so on, right up to very last block which outputs to sample M. If the AU is doing audio repair, and if it decides that NO repairs are actually needed, it's important that the file being processed in the host remains unchanged. Sending leading zeros, and throwing away tails, will not cut it.

Brian Davies
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