First 5 seconds of Export buzzing

[Gale Andrews]

I can reproduce the problem — in either Audacity 2.0.3 or 2.0.5.

Thanks, Koz. Can you also try 2.0.2 ( http://audacity.googlecode.com/files/au ... -2.0.2.zip )? 2.0.2 does not have the problem for me, but does for Ken.

If you close and reopen the project then export WAV, do any of 2.0.2, 2.0.3 or 2.0.5 produce crackle in the exported WAV? Ken gets crackles in the exported file unless he goes back to 1.3.13. I can hear the crackle in the exported WAV even on Windows, so the damage is genuine, but the project does not crackle on Windows.


Gale

[kozikowski]

Here it is. Real time capture. All I was doing was pressing space-bar stop and start. I took the pauses out where I tried moving things around the screen. The end piece is a music proof. It was a download. Thats the whole pathway from iTunes in the Mavericks machine to a recording on my Mini "TV set."

This particular time the problem exhibited nearly every other start. It's completely random.

The Mavericks machine isn't running anything else. I think we proved long time ago it didn't seem to be a machine overload problem or dependent on other applications.

Koz

[kozikowski]

This would work better with the link.
http://kozco.com/tech/clips/20140406MBPCrackleTest.wav
Koz

[kozikowski]

I exported a WAV from both 2.0.5 and 2.0.3. The 2.0.5 wav appears to be perfectly clean (for the first ten seconds). The 2.0.3 export, however, is a Little Bit Dirty. Starts off clean and then exhibits a little crackle here and there. I suspect if I did it enough times I'd get the same variability I get in the playback crackles.

Today's playback variation is two crackles and one clean, two crackles, etc.

Koz

[kozikowski]

Audacity 2.0.2 crackles just like everybody else, but 2.0.0 does not. I started 2.0.0 multiple times and played/stopped forever and that version does not make noise. Koz

[kozikowski]

I'm beginning to scare the problem. Audacity 2.0.3 now only crackles on the first play after opening the show. All the rest of them are clean. I uninstalled 2.0.5.

Koz

[kozikowski]

2.0.0 WAV export is clean.
Koz

[kozikowski]

2.0.3 crackles change depending on track size. View > Fit Vertical and every Play crackles now.
Koz

[kozikowski]

2.0.0 still clean. I tried it with Control-Click the AUP file > Open With, and Open Audacity Cold > Open Recent. All clean. Is this where we flag the developers?

Koz

[Gale Andrews]

I exported a WAV from both 2.0.5 and 2.0.3. The 2.0.5 wav appears to be perfectly clean (for the first ten seconds). The 2.0.3 export, however, is a Little Bit Dirty. Starts off clean and then exhibits a little crackle here and there. I suspect if I did it enough times I'd get the same variability I get in the playback crackles.

Thanks for testing.

Yes it seems that you cannot depend on 2.0.2 or later on Mavericks to play or export that project without the crackles.

Do you agree if you drag the "Evan" track down to second track that the playback problem reliably goes away in 2.0.2 or later on Mavericks?

Before I raise a report on this, do you have a Mac Pro (or any Mac) with earlier than OS X 10.9 on it? Ken's project was the first project including white space that I could get repeatable playback problems on, but when I tried other projects before I was not on Mavericks.


Gale