04.08.2014 18:40, Peter Meerwald wrote: > see https://libav.org/doxygen/master/group__lavr.html > > Signed-off-by: Peter Meerwald <pmeerw at pmeerw.net> > Signed-off-by: poljar (Damir Jeli?) <poljarinho at gmail.com> > --- > configure.ac | 17 +++++ > src/Makefile.am | 6 ++ > src/pulsecore/resampler.c | 14 +++- > src/pulsecore/resampler.h | 2 + > src/pulsecore/resampler/lavr.c | 160 +++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 198 insertions(+), 1 deletion(-) > create mode 100644 src/pulsecore/resampler/lavr.c This resampler needs further investigation. For 44100 -> 48000 Hz resampling, it yields response that does not even resemble that of a proper resampler. In particular, instead of attenuating only frequencies that are close to the half of the sample rate, it attenuates frequencies near the quarter of the sampling rate. Also, unlike any other resampler, it produces a strong line of the mirror frequency (22050 hz - signal frequency) on the output. Perhaps there is an implementation error somewhere? -- Alexander E. Patrakov -------------- next part -------------- A non-text attachment was scrubbed... Name: lavr_response.png Type: image/png Size: 203089 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20140824/645fbd9f/attachment-0001.png>
