Christian, Thank you for responding to my issue. I have made a short recording of the 'noise' I hear and attached a link to the audio. It sounds to me more like the output audio stream being filled with erroneous data rather than background noise aggregation. Also I omitted to mention that the LS version is 2.2.0.svn I'd be grateful if you could review and comment on the audio. Note the recovery at the end of the clip - as the active voices decrease below ~120 and the buffers clear. Thanks, Doug
https://www.dropbox.com/s/8onanduqhdo3g33/230211-202402.mp3?dl=0 On Sat, 11 Feb 2023 at 05:27, Christian Schoenebeck < schoeneb...@linuxsampler.org> wrote: > On Wednesday, February 8, 2023 12:58:17 PM CET Doug Gray wrote: > > Hello, > > I have patched and compiled linuxsampler for Raspberry Pi 4 4Gb with > arm64 > > PiOS (Debian) running a 6.1 Realtime patched Kernel. In every respect > > this system is running very well with only one issue. Whenever it > exceeds > > 128 (or thereabouts) Voices the audio starts to include noise like > tipping > > rice grains into a metal bowl. The noise persists and gets worse as the > > voice count increases until the voice count drops below ~120 the noise > > ceases and linuxsampler continues normally. No voice stealing is > occurring > > during this > > It's not you, it's the sample library. Samples have a ground noise which > is > typically inaudible when only playing one sample at a time, but when you > play > hundreds of samples simultaniously that ground noise becomes indeed > audible as > the noise adds up with each sample. So it's a matter of the signal to > noise > ratio (SNR) of the original audio hardware being used for the recordings. > > Today's audio interfaces have a much better SNR than decades ago, that's > why > you would not hear the noise with more recent sample libraries, at least > with > like ~100 voices. > > CU > Christian > > > > > _______________________________________________ > Linuxsampler-devel mailing list > Linuxsampler-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxsampler-devel >
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