On Thu, May 13, 2010 at 12:50:48AM +0100, Pedro Ribeiro wrote: > On 11 May 2010 18:38, Daniel Mack <daniel@xxxxxxxx> wrote: > > On Tue, May 11, 2010 at 06:32:50PM +0100, Pedro Ribeiro wrote: > >> On 11 May 2010 18:10, Daniel Mack <daniel@xxxxxxxx> wrote: > >> > No surprise here. The 4 channels are mux'ed in an interleaved fashion, > >> > so if the buffers contain rubbish, you will hear artefacts on all > >> > channels. > >> > >> So what would be the testcase you would like me to try? > > > > Would be good to see what happens if you could record audio (with > > arecord would be sufficient), just to see whether the same problem > > exists in the other direction. > > > > Either record an externally generated sine tone and open the resulting > > wave file in an editor. With the amount of artefacts you describe, they > > should easily be visible. > > Ok let me see if I got this straight: > > I should record some sound with the audio card and see if it impacts > the recording? May take me a few days, I need to get a microphone or > something like that borrowed. Yes, exactly. > > Another option is to play back any kind of recorded audio thru an audio > > device that does not show the problem (some internal, onboard device?). > > > > What do you mean by this? I didn't get it. I usually use my onboard > intel HDA for listening to music and have no problems. I was just thinking of a way to judge whether the recording is affected. And probably the best way is to listen to it :) Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
