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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.

Mittenchops
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  • Your audio output is not configured, and you need a sound font file. – CL. Nov 16 '13 at 23:20
  • the readme didnt have instructions for either of those things. do you have any links, tutorials, or starting points? – Mittenchops Nov 17 '13 at 03:20
  • Related https://stackoverflow.com/questions/7088672/pyaudio-working-but-spits-out-error-messages-each-time – Nikolay Shmyrev Mar 13 '19 at 23:25
  • Since it's been some days now - have you made progress and can share some example (project)? I'm trying to combine Fluidsynth and PyAudio as well and found your question. – frans Apr 30 '23 at 04:22

0 Answers0