sandbox/pitch: script fix for pitch extraction

git-svn-id: https://svn.code.sf.net/p/kaldi/code/sandbox/pitch@3192 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8

src/feat/pitch-functions.cc

@@ -579,7 +579,7 @@ void ExtractDeltaPitch(const PostProcessOptions &opts,
   KALDI_ASSERT(matrix_output.NumRows() == matrix_input.NumRows() &&
                matrix_output.NumCols() == 2);
   output->Resize(num_frames);
-  output->CopyColFromMat(matrix_output, 2);
+  output->CopyColFromMat(matrix_output, 1);
 
   // Add a small amount of noise to the delta-pitch.. this is to stop peaks
   // appearing in the distribution of delta pitch, that correspond to the