I'm following the demo here. I'm very new to creating audio via python, so I'm not sure how to debug which errors I should consider, what naive things I might be doing wrong.
Here are my python errors:
>>> import time >>> import numpy >>> import pyaudio >>> import fluidsynth >>> >>> pa = pyaudio.PyAudio() ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave Cannot connect to server socket err = No such file or directory Cannot connect to server socket jack server is not running or cannot be started >>> strm = pa.open( ... format = pyaudio.paInt16, ... channels = 2, ... rate = 44100, ... output = True) >>> >>> s = [] >>> >>> fl = fluidsynth.Synth() >>> >>> # Initial silence is 1 second ... s = numpy.append(s, fl.get_samples(44100 * 1)) >>> >>> sfid = fl.sfload("example.sf2") fluidsynth: error: Unable to open file "example.sf2" fluidsynth: error: Couldn't load soundfont file fluidsynth: error: Failed to load SoundFont "example.sf2" >>> fl.program_select(0, sfid, 0, 0) fluidsynth: error: There is no preset with bank number 0 and preset number 0 in SoundFont -1 -1 >>> >>> fl.noteon(0, 60, 30) -1 >>> fl.noteon(0, 67, 30) -1 >>> fl.noteon(0, 76, 30) -1 >>> >>> # Chord is held for 2 seconds ... s = numpy.append(s, fl.get_samples(44100 * 2)) I have pyaudio, fluidsynth, pyfluidsynth installed successfully, and am running ubuntu 12.10 if that makes any difference.