


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



NAME
     fmanal - formant estimates from speech waveforms

SYNOPSIS
     fmanal (-w window) (-s step) (-v|-t offset)  (-f  fixtxsize)
     (-p numpoles) (-i item) file

DESCRIPTION
     fmanal performs a windowed LPC analysis  on  sections  of  a
     speech  waveform  and  solves  the  predictor  polynomial to
     obtain spectral peak (formant) estimates.  Analysis  windows
     may  be  of  fixed length with a selected overlap, or may be
     positioned by means of a TX item (in which case the unvoiced
     periods  are  analysed according to the fixed length parame-
     ters).  Pre-emphasis, a Hamming window and the  autocorrela-
     tion  method is used for all analyses.  If a Tx item used to
     position analysis windows, the window size defaults  to  the
     pitch period. However, an explicitly given fixed window size
     (-f option) will over ride the default.

     Options and their meanings are:

     -I         Identify program and version number.

     -iitem     Select input item number.

     -wwindow   Select  analysis  window  size  in  milliseconds.
                Default: 20ms.

     -sstep     Select analysis window step size in milliseconds.
                Default: 10ms.

     -ffixtxsize
                Select fixed analysis window size in milliseconds
                for excitation synchronous analysis.

     -v         Treat all frames as voiced.  Default  is  to  use
                autocorrelation pitch detector and adapt analysis
                to  voicing  decision.  Voiced  frames  are  pre-
                emphasised,  unvoiced  frames  use  half  as many
                poles.

     -toffset   Select excitation synchronous analysis with  sup-
                plied  offset in micro-seconds between tx markers
                and start point of analysis window.  Negative  is
                earlier,  positive later.  Windows less than 20ms
                are treated as voiced.

     -pnumpoles Specify number of poles to use in  LPC  analysis.
                Default is (2+sample_rate/1000).





Sun Release 4.1         Last change: UCL                        1






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



INPUT ITEMS
     1.xx       Any speech waveform (10kHz recommended)

     3.xx       (Optional) Excitation markers.

OUTPUT ITEMS
     12         Formant estimates.

VERSION/AUTHOR
     1.0s - Mark Huckvale
     1.2s - Stuart Rosen (modifications)
     1.5 - Mark Huckvale

SOURCE
     /ptemp/mark/sfs/ucl/fmanal.c








































Sun Release 4.1         Last change: UCL                        2



