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Automated Audio Segmentation accuracy
User: Sergey S.
Date: 4/17/2008 5:26 pm
Views: 215
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Hi Ken,
On 32bit version of Ubuntu HTK compiled without a problem. Then I followed the tutorial "Automated Audio Segmentation Using Forced Alignment" without a hitch up to step 6. In Audacity I see a considerable misalignement between audio and labels. For example in the phrase "Chapter Four, Part One" the audio corresponding to label "part" contains sounds "part one", and the audio corresponding to label "one" contains only silence. Is it a normal misalignement or am I doing something wrong?
Thanks a lot,
--Sergey

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Re: Automated Audio Segmentation accuracy
User: Sergey S.
Date: 4/17/2008 5:36 pm
Views: 30
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Oops. Looks like I have posted the message in a wrong thread and I don't see any controls how to move it. Sorry for the mess.
--Sergey
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Re: Automated Audio Segmentation accuracy
User: kmaclean
Date: 4/18/2008 12:42 pm
Views: 28
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Hi Sergey, 

>Looks like I have posted the message in a wrong thread

It's a bit confusing, but this forum is OK - since your question relates to stuff on the dev page.  I really should have a comments page on the Automated Audio Segmentation page... but never got around to it :)

Ken 

 

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Re: Automated Audio Segmentation accuracy
User: kmaclean
Date: 4/18/2008 12:40 pm
Views: 26
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Hi Sergey,

>Is it a normal misalignement or am I doing something wrong?

It all depends on the acoustic model - the better the AM, the better the alignments.  Are you using the current stable VoxForge acoustic model or one of the nightly builds?

Remember for audio segmentation, we don't need perfect alignment, just one good enough to pick out the silences.

Ken 

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Re: Automated Audio Segmentation accuracy
User: kmaclean
Date: 4/18/2008 1:11 pm
Views: 26
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Hi Sergey,

I fixed the link to the audiobook used in the automated segmentation howto:

[SND] historyofengland01ch04_01_macaulay.wav 04-Mar-2007 14:32 165M

Look at this audio with the labels I generated (audacityLabelTrack.txt) in Audacity ... are yours any worse/better than these?

Ken 

 

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Re: Automated Audio Segmentation accuracy
User: Sergey
Date: 4/18/2008 1:45 pm
Views: 23
Rating: 7    Rate [

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> Are you using the current stable VoxForge acoustic model or one of the nightly builds?
I used the nightly build, because when I click the click to the "current stable release" I get "Error 404: NOT FOUND!"

> ...are yours any worse/better than these?
Oh, mine are much worse. Yours are perfect compared to mine.

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Re: Automated Audio Segmentation accuracy
User: Sergey
Date: 4/18/2008 2:00 pm
Views: 26
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I tryed to use acoustic model from http://www.repository.voxforge1.org/downloads/Main/Tags/Releases/0_1alpha-build541/
Now the alignment look good! :-)
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Re: Automated Audio Segmentation accuracy
User: kmaclean
Date: 4/18/2008 2:18 pm
Views: 36
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Hi Sergey,

>Now the alignment look good!

Now that's interesting ... for the longest time, the nightly build AM performed better than the current stable release ... I'll have to look in to this.

thanks for your feedback! 

Ken 

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Re: Automated Audio Segmentation accuracy
User: Sergey
Date: 4/18/2008 7:24 pm
Views: 24
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I have found a newer version of acoustic model which also works very good.
http://www.repository.voxforge1.org/downloads/Main/Tags/Releases/0_1_1-build726/
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