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Subject Sound delay on clean install of ubuntu 10.04



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bobby
Post: May 2nd 2010 at 10:08 AM

Hello. I have had this problem with ubuntu 9.10 and probably before.

I have done a clean install so no old configs should interfere.

When playing a song it will play prefectly, but if I stop and leave it for a while the sound is delayed by a long time. Sometimes when I stop it playing and start it works perfectly.

Using timidity(freepats) the delay can be a few minutes. With Gervill it will be about 10 seconds.

What could be causing this?


To fix the problem I have to close down tuxguitar and load it back up.


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Julian
Post: May 3rd 2010 at 8:53 PM

Try install QSynth and use it with "pulseaudio" as audio driver.
since pulseaudio is the default ubuntu audio server and timidity don't have support for it.


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bobby
Post: May 9th 2010 at 7:33 AM

Sorry for the late delay. I've been busy.

QSynth did work but it was really distorted. It sounds like a broken speaker on a dying toy.

I turned off reverb and chorus, but it had no effect.

When playing the highlighting of the note is more accurate than timidity.

here is the output
08:23:28.945 Qsynth1: Creating synthesizer engine...
08:23:28.962 Qsynth1: Loading soundfont: "/usr/share/sounds/sf2/FluidR3_GM.sf2" (bank offset 0)...
08:23:29.307 Qsynth1: Creating audio driver (pulseaudio)...
08:23:29.312 Qsynth1: Creating MIDI router (alsa_seq)...
08:23:29.312 Qsynth1: Creating MIDI driver (alsa_seq)...
08:23:29.315 Qsynth1: Creating MIDI player...
08:23:29.316 Qsynth1: Synthesizer engine started.
08:23:29.316 Qsynth1: fluid_synth_set_gain(1)
08:23:29.316 Qsynth1: fluid_synth_set_reverb(0.2,0,0.5,0.9)
08:23:29.317 Qsynth1: fluid_synth_set_chorus(3,2,0.3,8,0)
fluidsynth: warning: Failed to pin the sample data to RAM; swapping is possible.
fluidsynth: Using PulseAudio driver
fluidsynth: warning: Failed to set thread to high priority
fluidsynth: warning: Failed to set thread to high priority


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Anonymous
Post: May 9th 2010 at 3:57 PM

I've been using fluidsynth for most of today and the distortion is not too bad at the moment. It was really bad yesterday though.

The secret is to play it at a low volume(speakers dial, not software). It's still a bit annoying, but it works a lot better than timidity.

The sound hasn't cut off/delayed yet with fluidsynth.


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