Re: [linux-audio-dev] Merging digital sampling sessions

From: Tim Orford <tim@email-addr-hidden>
Date: Wed Dec 14 2005 - 20:19:04 EET

On Sun, Dec 11, 2005 at 11:44:32PM +0100, David Kastrup wrote:
> >> Ok, and here is the rub: playback is not perfect, and neither seems
> >> to be the sampling. Probably at times error interpolation sets in,
> >> probably at times samples get lost or replicated. Not much, perhaps
> >> once per minute or so. This leads to audible clicks, of course.

xruns? do you still get the clicks when the card is in loop-back mode?
(this will completely bypass the OS and all driver or xrun issues)

> So there is already something going on which I don't understand. In
> "crackle mode", there is basically just noise, but the noise level is
> correlated with the amplitude of the sound source.

This sounds like you might possibly be a victim of a known
bug on this hardware. Try changing the "IEC958 In Phase Inverse" switch.

> So what would one actually have to do to have the "incoming spdif
> clock" respected?

There is nothing to set on this card. It automatically syncs to
the incoming spdif when this input is selected.

cheers

--
Tim Orford
Received on Thu Dec 15 00:15:07 2005

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