| Further to my previous post stating that the version was 2.2.0, this is as reported when launched and corresponds to the package version generated by the Debian build process. However the source was copied from GitHub on the 30th Dec 2022.
I’m not sure why this differs from the GitHub indication of 2.2.1 which has been the case for 3 years. Also LS reports a build date of 9th May 2021, which should also be 30th December 2022.
A little odd but I suppose it to be a bug in the Debian build. Sent from my iPad On 11 Feb 2023, at 9:03 pm, Doug Gray <doug2...@gmail.com> wrote:
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
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
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