You (Fons) obviously know your stuff when it comes to implementing convolution, and I'm very grateful you gave us libzita-convolver, but I have to disagree with this statement:
On Sat, 2012-10-20 at 12:00 +0000, Fons Adriaensen wrote: > Thirdly, for the use case of reverbs, the whole latency issue is > just irrelevant. A reverb IR should not contain the direct sound > (since this will be mixed in separately), and in fact the first > 10 ms or so should be silence anyway, they don't contribute to > the effect and just cause coloration. Which means you can adopt > a scheme that permits arbitrary block sizes by allowing one (Jack) > period of latency. Just remove as many samples from the start of > the IR to compensate. When you use a reverb plugin for ambience or things like the Bricasty M7 Bass XXL impulse, the coloration it is 90% of the effect you are using the plugin for. There is a whole range of useful coloration to be had by changing the pre-delay within 0-20ms. Often it will sound best with 0ms, because that how the maker of the impulse listened to it. An ambience impulse is an important part of practically every mix I do. That is why I am so happy with libzita-convolver and it's offspring :) That is also why I would *love* latency compensation on buses in Ardour. All the best, Bart. _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
