SourceForge.net wrote:
Summary: resampling method for halfblocks
what for: an the output-signals of an fft are redundant since they are (anti)symmetric; therefore it is a waste of cpu-power to apply dsp-processing on both halfs of such signals; with this patch it is possible to do a "downsampled" processing only on the relevant (1st) part of the signal (~50% performance gain): after upsampling you would have to recreate the entire signal manually (e.g. mirror the block and add it to the non-mirrored part)
the main reason for this is, that tm has already started a separate library "iem_spec2" which re-implementes things like [+~] but ignores the 2nd half of the signal-block. since this is a lot of work, i would gladly see such functionality within the [inlet~]/[outlet~] objects.
mf.asdr. IOhannes