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. > 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. > Thanks, > Daniel > Pedro -- 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
