On Tue, Sep 24, 2019 at 12:38 PM Johannes Lorenz <j.s...@lorenz-ho.me> wrote:
> Counting zero crossings prevents > clicking on lower notes, and it makes higher notes more punchy. There's fundamentally no such thing as a zero crossing. You might have two samples on either side of zero, but you still don't have a sample *at* zero, so in the general case, truncating one of them to zero and starting/ending there is still going to give you distortion and/or noise. Obviously there may be cases where one of them is close enough to zero for this not to be be an issue, but it's not a general method. Ardour applies declick fades every time the transport starts and stops. You can read about how we do it here: https://github.com/Ardour/ardour/blob/master/libs/ardour/ardour/disk_reader.h#L135 https://github.com/Ardour/ardour/blob/master/libs/ardour/disk_reader.cc#L1445 https://github.com/Ardour/ardour/blob/master/libs/ardour/amp.cc#L163
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