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* Use floats instead of double for sound calculations. This improves performance notable and was default for version 1.1.6 using autotools. * Fix buffer overrun when using floats * Make use of ARM NEON for multithreading enabled Performance and sound correctnes was tested with qtractor and a reworked version of fluidsynth-dssi [1-2]. Tests were performed for single- and multithreading enabled. [1] https://github.com/schnitzeltony/fluidsynth-dssi/commit/bad09c6f5c5508c5f5330aa5188510f975e50c50 [2] https://github.com/schnitzeltony/meta-qt5-extra/blob/master/recipes-misc/recipes-multimedia/fluidsynth/fluidsynth-dssi_1.0.0.bb Signed-off-by: Andreas Müller <schnitzeltony@gmail.com> Signed-off-by: Armin Kuster <akuster808@gmail.com>