On Fri, 30 Aug 2019 10:31:25 +0200, Yang, Xiaotao (X.) wrote: > > Hi: > Why should I call api<snd_pcm_close()> between the interval if I want to play a wav file two times repeatly, Otherwise pop chime occurs? > > Eg: (fake code as follows): > Following codes works good. > Pcm.open();//open pcm device > Pcm.play(demo.wav);//set parameter and call snd_pcm_writei() to play > Pcm.close();//close pcm device > Pcm.open(); > Pcm.play(demo.wav); > Pcm.close(); > > But following codes works with pop chime > Pcm.open(); > Pcm.play(demo.wav); > Pcm.play(demo.wav); > Pcm.close(); It's not clear what "pop chime" means, so a bit hard to answer. If the pop chime means some clicking noise, it shouldn't be a problem in the second case, either. It's more likely some issues in the application side. Takashi > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
