Static for MP3

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talkinggoat
Posts: 6
Joined: Sat Jul 30, 2016 8:20 pm
Operating System: OS X 10.9 Mavericks

Static for MP3

Post by talkinggoat » Sat Jul 30, 2016 8:26 pm

I just upgraded Audacity to 2.1.3, because I was getting nothing but modulated static, when trying to play/edit an mp3. The mp3 works fine, in VLC. After I attempt to play it, Audacity becomes unresponsive. I have tried removing Audacity: apt-get remove --purge audacity and reinstalling, apt-get install audacity, but it doesn't help. Even with the new version, all I get is static, from this MP3.

VLC says the codec in stream 0 is
Audio,
MPEG audio layer 1/2/3 (mpga)
mono
22050
32 kb/s

Any ideas?

steve
Site Admin
Posts: 80752
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Static for MP3

Post by steve » Sat Jul 30, 2016 8:39 pm

Which Linux distribution (and version)?
Which version of Audacity?

How are you putting the MP3 into Audacity?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

talkinggoat
Posts: 6
Joined: Sat Jul 30, 2016 8:20 pm
Operating System: OS X 10.9 Mavericks

Re: Static for MP3

Post by talkinggoat » Sat Jul 30, 2016 10:45 pm

Audacity 2.1.3
Ubuntu 14.04

This problem just started and the static doesn't occur in any other program. I haven't done any upgrades, except for upgrading Audacity, but that was done, after the static. I even tried converting the MP3 to WAV, but it still does the same thing.

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: Static for MP3

Post by Gale Andrews » Sun Jul 31, 2016 1:26 pm

talkinggoat wrote:Audacity 2.1.3
Ubuntu 14.04
Audacity 2.1.3 does not exist, except as an unreleased alpha build. Where did you get it from - the Launchpad "Daily Builds"? You should not use those for production work, irrespective of when the playback problem started.

If you want a more recent stable release version, uninstall the Daily Builds and the repository version of Audacity and install this 2.1.2 PPA: https://launchpad.net/~ubuntuhandbook1/ ... u/audacity.
talkinggoat wrote:This problem just started and the static doesn't occur in any other program. I haven't done any upgrades, except for upgrading Audacity, but that was done, after the static. I even tried converting the MP3 to WAV, but it still does the same thing.
It seems you are experiencing the common skipping/freezing problem that Audacity has with PulseAudio playback. You can probably fix it by adjusting the PulseAudio latency, or using the (hw) playback device instead, bypassing Pulse. See http://wiki.audacityteam.org/wiki/Linux_Issues#pulse.


Gale
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talkinggoat
Posts: 6
Joined: Sat Jul 30, 2016 8:20 pm
Operating System: OS X 10.9 Mavericks

Re: Static for MP3

Post by talkinggoat » Wed Aug 03, 2016 2:49 pm

Thank you.

Taken from the Audacity WIKI,
To avoid opening the terminal each time, it may (depending on the distribution) be possible to add the required latency command directly to the application launcher. If not, you can (with root permissions) edit /usr/share/applications/audacity.desktop and insert the pulse latency command directly after "Exec=", for example:

Exec=env PULSE_LATENCY_MSEC=30 audacity %F

I had to increase to 80 MSEC, because, at 30, there was a ticking noise in all the audio.

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