Testing PortAudio

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I don’t know what took me so long to do it, but I finally installed PortAudio so that I can actually use it in my prototype program. To make sure it works, I ran one of the example programs, “paex_sine”, which plays a sine wave for five seconds, and got the following output:

esly14@mc-1:~/Documents/git/edward1617/portaudio/bin$ ./paex_sine
PortAudio Test: output sine wave. SR = 44100, BufSize = 64
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
Play for 5 seconds.
ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred
Stream Completed: No Message
Test finished.

I’m not entirely sure what is causing the errors to appear, but the sine wave still played just fine, so I’ll leave it alone for now unless something else happens along the way.

Now that I have all the libraries I need for my prototype program, all I need to do next is to make some changes to the demo program to suit my initial needs. I’ll also need to figure out how to compile the program once the code is done and then write my own Makefile.

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