[alsa-devel] about pop chime on pcm api

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();