Making freebsd - pcbsd faster by changing the interrupt requests

[Hans Petter Selasky]

On 07/20/14 11:09, Hans Ruhe wrote:
> Hello everybody,
>
> I am testing for PCBSD primarily but I am also testing with a hifi
> journalist, tube amplifier designer. This is the website:
> http://www.audio-creative.nl/
>
> Mind you it is mostly in Dutch but some parts are in English. They recently
> started to sell kits like a dac and a tube phono amplifier.
> Mind you this guy has a University degree in electronics and the firm he
> works for make parts for ASML which sells machines for Intel, Samsung etc
> to bake their processors. So it is a very high level of knowledge of
> electronics.
>
> Always looking for better sound, 2 months ago I came upon Ubuntu Studio,
> which projects uses real time latency and changing interrupt requests to
> make it faster and also to have those requests dealing with audio and
> movies a privilege above other ones.
>
> I am not that far that I exactly know what they do, but the fiddle in the
> kernel for that :-)
> Also I am not a developer ( i bought myself a Raspberry Pi to make the
> first steps though).
>
> This is only an idea, but would it be possible to do such a thing for
> freebsd and pcbsd as well ?
>
> I tested Ubuntu Studio with the use of Audacious and I could really hear a
> difference. I have a 3 way loudspeakersystem and a EL84 tube amplifier in
> Class A (yes it uses some more electricity but it really pays of enjoying
> music a lot more ;-)
>

Hi,

Some hardware devices have effects, like treble, base, 3D stereo, and so 
on, which might be configured differently. Can you tell us at what 
sample rates you are able to hear differences?

--HPS