#9438: Mixer not resampling very well
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Reporter: Pete | Owner: nobody
Type: bug | Status: reopened
Priority: normal | Milestone: R1
Component: Add-Ons/Media/Mixer | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 9704
Has a Patch: 0 | Platform: All
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Comment (by tangobravo):
Pete: Are the crackles gone now? My guess is those were due to the bugs
(out-of-memory access, etc) in the linear resampler that Pulkomandy fixed.
The ghost sweeps on the other hand are probably an artefact of linear
resampling; which is not a good way to resample audio in general. In a
work project I've used a resampler from xiph.org speexdsp library - it's
BSD licensed and the entire implementation is self-contained in the
resampler.c file. It offers a configurable quality parameter to select the
number of samples in each window and tune the speed/quality tradeoff.
https://github.com/xiph/speexdsp/blob/master/libspeexdsp/resample.c
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Ticket URL: <https://dev.haiku-os.org/ticket/9438#comment:15>
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