[pvrusb2] Noise

[Diego Rivera]

I was going to mention that, but the periodicity is what gave me pause.
Have you tried a filtered power source? Maybe powered by an UPS for a few
minutes? That might help isolate the power feed as a factor.

Cheers!

--

Diego Rivera

On Sun, Apr 21, 2019, 14:20 Gary Buhrmaster <gary.buhrmaster at gmail.com>
wrote:

> On Sun, Apr 21, 2019 at 9:27 AM Jan Ceuleers <jan.ceuleers at computer.org>
> wrote:
>
> > The audio defect is a clearly audible repetitive "whistling" noise, with
> > a periodicity of about 1 second. This noise is not present on the audio
> > signal that goes into the PVR.
>
> Just on principal, check the power supplies
> (swap between the units that work and one
> of the STB ones).  And also check for ground
> loops between the PC, the PVR and the
> STB, which can result in all sorts of audio
> artifacts (just go over the the audiophile
> forums and discuss ground issues and
> whines and whistles).
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