


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



NAME
     HQsynth - High quality formant synthesis

SYNOPSIS
     HQsynth (-i item) (-c) (-r|-e) file

DESCRIPTION
     HQsynth performs  excitation-synchronous  formant  synthesis
     from a set of formant estimates using an LPC synthesis model
     using the procedure of Melvyn Hunt.  Input should be  an  FM
     item   produced  by  HQanal  (originally),  and  a  residual
     waveform ("-r" option) if required. A prototype voiced exci-
     tation  waveform  may  be  suppied ("-e" option), preferably
     generated by HQrsav.  Output  is  a  speech  waveform.   De-
     emphasis is applied to the voiced regions only.

     Options and their meanings are:

     -I         Identify program and version number.

     -iitem     Select input item number.

     -c         Use LPC coefficients as input instead of  formant
                estimates.

     -r         Use residual waveform for excitation, rather than
                a synthetic excitation waveform.

     -e         Use a prototype excitation waveform  included  in
                file  (LX item of 200 samples) instead of default
                pulse.

INPUT ITEMS
     12.xx      HQanal analysed formant estimates.

     2.xx       Optional residual  waveform  (matched  to  output
                waveform).

     2.xx       Optional prototype excitation waveform (200  sam-
                ples @ 10kHz).

     14.xx      Optional LPC coefficients.

OUTPUT ITEMS
     1          High Quality formant resynthesized speech.

VERSION/AUTHOR
     1.3 - Mark Huckvale (from fmconv and syn by Lynn Whitaker)

SEE ALSO
     "Generation  of  controlled   speech   stimuli   by   pitch-
     synchronous LPC analysis of natural utterances", M.J. Hunt &



Sun Release 4.1         Last change: UCL                        1






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



     C.E. Harvenberg, 12th Intl. Congress on  Acoustics,  Toronto
     Canada, 1986.

BUGS
     HQsynth is not compatible with  formant  items  produced  by
     rootlpc or from ILS.  Analysis must be performed by HQanal.

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














































Sun Release 4.1         Last change: UCL                        2



