On Tue, Mar 15, 2005 at 12:15:35PM +0000, David wrote: > Kai Fritzowsky wrote: > >On Tue, Mar 15, 2005 at 10:33:07AM +0000, David wrote: > >>>Right. Literally. But I've got some audible noise that I can't get rid > >>>of. Is this an hardware issue or related to ivtv or mythtv? Anyone else > >>>got this problem? > >>No audio 'noise' (go and google for 'ground loop' though...) > >My 'noise' clearly is not a ground loop. I know this 50Hz sound quite > >well. > >It's more like the noise you can hear, when the tuner is not tuned. In > >addition, I can even hear it when viewing recordings on my wireless > >notebook. My VCR and TV receive perfect sound, so there's nothing wrong > >with > >the signal.
> OK, what soundcard? > Are you using ALSA? Different sound outputs: - FE/BE combo: PVR-350 - FE on notebook: Silicon Integrated Systems [SiS] SiS PCI Audio Accelerator (rev 02) using ALSA > Does alsamixer (or whatever) show anything at full volume (including > recording levels) - for now make sure nothing is above 80%. I played with all involved mixer settings which did nothing good or bad apart from adjusting the volume. > Are the cable connections clean? Plug and unplug them a few times to try > and ensure good electrical contact. Yes, the connections are good. I used the same cabling connected to the VCR to test the setup. > Does a source recorded elsewhere (a known good mp3) play back cleanly? Yes, it does. I can't test this with the PVR's tv-out but with the notebook. I tested playing back the PVR recordings with xine which is noisy. I also tested playing back other recordings with xine and it sounds good. > (in which case it's a recording/sampling issue) > or not (in which case it's at least a playback, maybe both issue) /Kai
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