ここでデモをフォローしています。私はPythonを介してオーディオを作成することに非常に慣れていないため、考慮すべきエラー、間違っている可能性のある単純なことをデバッグする方法がわかりません。
これが私のpythonエラーです：
>>> 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))
私はpyaudio、fluidsynth、pyfluidsynthを正常にインストールしており、違いがあればubuntu 12.10を実行しています。