I'm getting the following error at step 6 of the VoxForge training script:

        Step 6 - Creating Monophones
==============================================================
making hmm0

making hmm1

  ERROR [+6510]  LOpen: Unable to open label file ../../train/mfcc/List01/List01_04a.lab
 FATAL ERROR - Terminating program HERest

I've taken a look and, the mfcc directory contains no label files (I don't think it should). The labels are stored in words.mlf, phones0.mlf and phones1.mlf, which I assume is where they are supposed to be. Why then is HTK looking for the labels in the mfcc directory?

More important, I'd appreciate help in solving problem.

Thanks,

- Olumide

--- (Edited on 4/10/2013 3:14 pm [GMT-0500] by Olumide) ---

My anwser to this problem ist not really logical and maybe don't help you at all since this message could have several reasons.

One ist the following:

http://www.dev.voxforge.org/projects/Main/ticket/121

it simply states that every prompt should start with *.

So all your prompts have to look like this:

*/DE10-018 ABER NOCH NICHT VERÖFFENTLICHT WORDEN
*/de10-019 DER KOMMENTARTEXT IST NUN VERÖFFENTLICHT WORDEN
*/de10-020 ER KANN VON JEDERMANN WELTWEIT GELESEN WERDEN
*/de10-021 DER KOMMENTARTEXT IST IN BLAUER FARBE HERVORGEHOBEN
*/de10-022 WENN MAN NICHTS ZU SAGEN HAT DANN SOLLTE MAN DIE KLAPPE HALTEN
*/de10-023 IN DIESEM FALL FAND ICH DEN KOMMENTAR GANZ PASSEND

The second reason could be the "newline" problem. Sometimes if you load something from one OS to another the newline operator changes.

So check your prompt and your codetrain.scp and look for the missing file. Go to end to that line and press enter. That type the first character of the new line and press delete two times.

That is what helped me. Or you could use conversion tools.

--- (Edited on 7/25/2013 7:55 am [GMT-0500] by Binh) ---

I found another possibility. If this error occours during the creation of hmm8 you should check hmmm7. If in on File no nodes reached the end the same error comes during creation of hmm8.

I removed that file from my prompts.

--- (Edited on 8/2/2013 10:20 am [GMT-0500] by Binh) ---