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HTK: Using external coefficients vectors problem.

Hi!

I'm trying to develop a recognition system pitch-based. So, I need to use external coefficients vectors proceeding from a pitch detector that I've programmed. I use a MatLab function to make a .htk file format where I append pitch coefficients to the head. If I use "HList -h -S train.scp", for example, I obtain for one .htk file:

------------------------------------- Source: ns5 ------------------------------

  Sample Bytes:  200      Sample Kind:   USER

  Num Comps:     50       Sample Period: 10000.0 us

  Num Samples:   1        File Format:   HTK

------------------------------------ Samples: 0->-1 ----------------------------

0:      -1.067   2.653   2.653   2.653   2.653   2.653   6.580   6.580   6.580

15.101

        15.101  15.101  15.101  15.101  15.101   6.580   6.580   6.580   2.653

 2.653

        -1.067  -2.828  -4.588  -4.588 -11.079 -11.079 -11.079 -11.079 -11.079

-7.923

        -6.256  -4.588   2.653   2.653   2.653   2.653   2.653   2.653   2.653

 2.653

        -4.588  -1.067  -4.588  -4.588  -4.588  -4.588  -7.923 -16.207 -16.207 -

24.492

----------------------------------------- END ----------------------------------

I established 10ms to sample period because my pitch detector evaluate pitch from 10ms length samples (I don't know if this is correct). Vector is composed by 50 coefficients and I defined sample kind as USER.

When I use HERest I obtain the next error for every .htk file corresponding to one utterance:

ERROR [-7324] Bad data or over pruning.

It isn't a matching problem. I think that it isn't a threshold problem either, because I relaxed pruning thresholds in the interval 0 to 10000... Probably the problem is that I have only one sample with 50 components but, if I do it backwards I would have 50 samples with just 1 component per sample so, how could I augment samples and components if I only give a value (corresponding to the pitch in Mel scale) per 10ms segment size?

How must I config the config file if I have defined files with coefficients vectors? For example, I don't need SOURCEKIND but TARGETKIND exists because I have defined .htk files yet (I don't need to use HCopy, I have equivalent .mfc HTKBook example files).

Thank you very much.

--- (Edited on 10/12/2010 1:40 pm [GMT-0500] by iloes) ---