How to find out which PCM handle ASCII identifier to pass to snd_pcm_open?

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I have just started learning ALSA's api, and came accross some examples at http://equalarea.com/paul/alsa-audio.html, which pass argv[1] to snd_pcm_open.

My question is which should be the values of argv[1] for the microphone, and left and right speakers devices?

Thanks,

Andre


      

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