Hi

I want to know what is the differece between MFCC_0_D_A and MFCC_0_D_N_Z and which one is better?

Also if i use MFCC_0_D_N_Z i can't perform HCopy directly usin this option and therefore i will have to use
something like MFCC_0_D and then later change to MFCC_0_D_N_Z. But when it comes to testing i get a error saying Incompatible sample kind MFCC_D_0 vs MFCC_D_N_Z_0
How do i overcome this?

Also once i have completed making my HMM model with MFCC_0_D_N_Z, I am NOT able to run HVite live aswell. I receive the following error
READY[1]>
  ERROR [+6320]  OpenAsChannel: cannot zero mean within buffer
  ERROR [+6316]  OpenBuffer: OpenAsChannel failed
  ERROR [+3250]  ProcessFile: Config parameters invalid
 FATAL ERROR - Terminating program HVite


my config file for recognition looks as follows
=========================================================================================
                    #config2
# Waveform Capture
SOURCERATE = 625.0    # = 16kHz
SOURCEKIND = HAUDIO
SOURCEFORMAT = HTK

#Conversion parameters of the input signal
AUDIOSIG = -1        # Negative value => key press control


#USESILDET = T
#MEASURESIL = F
#OUTSILWARN = T
#SILENERGY = 55.0

ENORMALISE = F
TARGETKIND = MFCC_0_D_N_Z        #Identifier of the coefficients to use
TARGETRATE = 100000.0                # = 10 ms = frame periodicity
WINDOWSIZE = 250000.0                # = 25 ms = length of time frame
USEHAMMING = T                            #Use of Hamming windowing function
PREEMCOEF = 0.97                        #Pre-emphasis coefficient
NUMCHANS = 26                                #Number of filterbank channels
CEPLIFTER = 22                            #Length of cepstral liftering
NUMCEPS = 12                                #Number of MFCC coeffs
============================================================================================

config for wav is when creating the MFCC_0_D_N_Z model (for HCOpy)
=====================================
# Coding parameters
TARGETKIND = MFCC_0_D
TARGETRATE = 100000.0
SAVECOMPRESSED = T
SAVEWITHCRC = T
WINDOWSIZE = 250000.0
USEHAMMING = T
PREEMCOEF = 0.97
NUMCHANS = 26
CEPLIFTER = 22
NUMCEPS = 12
ENORMALISE = F
SOURCEFORMAT = WAV
SOURCEKIND = WAVEFORM
TARGETFORMAT = HTK
============================================

later this is change to (to be used in HERest)
==============================================================================
# Coding parameters
TARGETKIND = MFCC_0_D_N_Z
TARGETRATE = 100000.0
SAVECOMPRESSED = T
SAVEWITHCRC = T
WINDOWSIZE = 250000.0
USEHAMMING = T
PREEMCOEF = 0.97
NUMCHANS = 26
CEPLIFTER = 22
NUMCEPS = 12
ENORMALISE = F ======================================================


thanks heaps !!!

--- (Edited on 8/27/2008 1:38 am [GMT-0500] by Visitor) ---