On Fri, Jun 5, 2026 at 5:48 PM Jan Stary <[email protected]> wrote: > On Jun 05 16:09:53, [email protected] wrote: > > Hi!, > > > > I am working on a curses C sndio app to > > play samples that are just wav files. > > I would like to be able to play them > > "over each other" like not sequentially. > > > > (I would like for the wav file to play > > regardless if another one is already playing.) > > > > I can play ONE wav file using sndio. > > > > https://codeberg.org/pkw/siotest/src/branch/main/siotest.c#L130 > > > > What is the easiest and most idiomatic way > > to play multiples ones ? > > If they use the same sample encoding and have the same number of channels > and use the same sample rate, then make one output sample the average > of the input samples, obviously. Doing the arithmetics might overflow > though, so you might want to convert to floats and do the arithmetics > there and then convert back to the sample encoding you want to play. > > And if they do not use the same sample rate, you have resampling to do; > and if they do not use the same sample encoding, you need to convert; > and if they have different number of channels, you need to remix somehow. > > > Any pointers or places to look? > > Look what aucat does with more than one -i > > Jan > > Hi Paul,
I built a simple library to handle this case a couple of years ago to handle exactly such a case. I used it in a dichotic listening test and in for audio feedback in a stroop test. You can find the code here -> https://sw.gy/c-snd/ Ron
