


HQANAL(SFS1)      MISC. REFERENCE MANUAL PAGES       HQANAL(SFS1)



NAME
     HQanal - High quality formant analysis

SYNOPSIS
     HQanal (-i item) (-o offset) (-t) (-c) (-r) (-6) file

DESCRIPTION
     HQanal performs excitation-synchronous formant analysis of a
     speech  waveform  using  LPC and root-solving following pro-
     cedure specified by Melvyn Hunt. Input  should  be  a  10kHz
     speech  waveform (preferably generated from a 20kHz acquired
     waveform using down210) and a  set  of  excitation  markers.
     The output is a set of raw formant estimates, synchronous to
     the excitation markers in the voiced regions,  and  at  20ms
     intervals  during  unvoiced  intervals.   The LPC covariance
     method is used, and pre-emphasis is applied  to  the  voiced
     regions only.

     Options and their meanings are:

     -I         Identify program and version number.

     -iitem     Select input item number.

     -ooffset   Set offset in micro-seconds  between  tx  markers
                and  start point of analysis window.  Negative is
                earlier, positive later, default is 0.

     -t         Write  tx  item  of  analysis  windows  used   in
                analysis.

     -c         Write LPC coefficients used in  analysis  instead
                of formant estimates.

     -r         Write LPC analysis residual as lx waveform.

     -6         Use 6-pole LPC analysis in voiceless regions.

INPUT ITEMS
     1.xx       10kHz sampled speech waveform.

     3.xx       Excitation markers.

OUTPUT ITEMS
     12         High Quality formant estimates.

     14         Optional LPC coefficients.

     2          Optional residual waveform.

VERSION/AUTHOR
     1.3 - Mark Huckvale (from lpc and rootlpc by Lynn Whitaker)



Sun Release 4.1         Last change: UCL                        1






HQANAL(SFS1)      MISC. REFERENCE MANUAL PAGES       HQANAL(SFS1)



SEE ALSO
     "Generation  of  controlled   speech   stimuli   by   pitch-
     synchronous LPC analysis of natural utterances", M.J. Hunt &
     C.E. Harvenberg, 12th Intl. Congress on  Acoustics,  Toronto
     Canada, 1986.

BUGS
     Good formant analysis relies on  good  data  preparation  as
     much as on a good program.
     The formant item produced by HQanal is not  compatible  with
     fmconv, use HQsynth for re-synthesis.

SOURCE
     /users/mark/sfs/man/../ucl/HQ.src/HQanal.c









































Sun Release 4.1         Last change: UCL                        2



