[Webkit-unassigned] [Bug 34912] audio engine: add ReverbConvolver class

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34912





--- Comment #1 from Chris Rogers <crogers at google.com>  2010-02-12 16:18:13 PST ---
Created an attachment (id=48675)
 --> (https://bugs.webkit.org/attachment.cgi?id=48675)
diagram describing operation of ReverbConvolver

The ReverbConvolver is able to perform extremely long real-time convolutions on
a single audio channel. It uses multiple FFTConvolver objects as well as an
input buffer and an accumulation buffer. Note that it's possible to get a
multi-threaded implementation by exploiting the parallelism. Also note that the
leading sections of the long impulse response are processed in the real-time
thread for minimum latency. In theory it's possible to get zero latency if the
very first FFTConvolver is replaced with a DirectConvolver (not using a FFT).

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