I've no idea really The only thing close to that I've done is generate 80 minutes of brown noise in Audacity, then do it again but put it in the other channel. So it's stereo brown noise, the channels are different. Very good for blocking ambient sound, I sleep listening to it in headphones. You want to start recording on one channel but delay the start of the other, so it's like singing rounds? So the 2 channels are out of sync? Like an echo or reverb on one. On 10/23/20, Stuart Naylor <stuartiannaylor@xxxxxxxxxxx> wrote: > Sox seems to work ok with files but I want grab a source add a delay to a > channel and guess could play back to a loopback. > There was a delay function with snd_loopback but can not seem to find it > anymore but also that is only via the pcm and not channel. > > I would of thought this is all that hard and was sort of surprised I > couldn’t find a plugin. > There are some ladspa effects but trying to work them out now seems near > impossible. > > Stuart > > > > Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows > 10 > > From: Alan Corey<mailto:alan01346@xxxxxxxxx> > Sent: 23 October 2020 15:37 > To: Stuart Naylor<mailto:stuartiannaylor@xxxxxxxxxxx> > Cc: alsa-user@xxxxxxxxxxxxxxxxxxxxx<mailto:alsa-user@xxxxxxxxxxxxxxxxxxxxx> > Subject: Re: Add audio delay to a channel > > Try sox, I think it's more versatile than aplay, etc. Huge man page. > If you only need to do it once Audacity can almost certainly do it. > > On 10/23/20, Stuart Naylor <stuartiannaylor@xxxxxxxxxxx> wrote: >> Does anyone know how to add a delay to an audio channel. >> >> Or if I break and combine PCMs add a delay to a PCM? >> >> Stuart >> >> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for >> Windows >> 10 >> >> > > > -- > ------------- > I already voted, leave me alone. > > -- ------------- I already voted, leave me alone. _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user