


ESFORM(UCL1)      MISC. REFERENCE MANUAL PAGES       ESFORM(UCL1)



NAME
     Esform - interactive LPC spectrum display

SYNOPSIS
     Esform (-I) (-p) (-s starttime|-S startsamp) (-e  endtime|-E
     endsamp)  (-l  lefttime|-L leftsamp) (-r righttime|-R right-
     samp) (-t print_title) (-i item|-g item) (-12)  (-n  ncoeff)
     sfsfile

DESCRIPTION
     Esform is a program to display LPC  spectrum  cross-sections
     of  regions  of  speech waveforms.  The program displays the
     input waveform at the top of the screen, and an LPC spectrum
     at the bottom.  A single cursor or two cursors may be placed
     on the waveform, and the  LPC  spectrum  at  the  cursor  or
     between  the  two cursors is calculated and displayed.  When
     one cursor is used, a window of 20ms is calculated;  a  ham-
     ming  window  is  always applied to the selected part of the
     signal.

OPTIONS
     -I         Identify program name and version number.

     -iitem     Specify input Speech item for  waveform  display.
                Default: last speech item.

     -gitem     Specify  input  Speech  item  for  spectrographic
                display.  Default: last speech item.

     -p         Direct output to printer.  The program  does  not
                enter  interactive  mode.   The  screen  image is
                recreated for the printer  using  other  command-
                line options.

     -sstarttime
                Specify  start  time  for  spectrum  in  seconds.
                Default 0.0;

     -Sstartsamp
                Specify start time for spectrum in samples.

     -eendtime  Specify  end  time  for  spectrum   in   seconds.
                Default: end.

     -Eendsamp  Specify end time for spectrum in samples.

     -llefttime Specify time for left cursor in seconds.  Default
                0.0;

     -Lleftsamp Specify time for left cursor in samples.

     -erighttime



SFS                     Last change: UCL                        1






ESFORM(UCL1)      MISC. REFERENCE MANUAL PAGES       ESFORM(UCL1)



                Specify  time  for  right  cursor   in   seconds.
                Default: end.

     -Erightsamp
                Specify time for right cursor in samples.

     -tprint_title
                Specify a title to appear on the printout.  If no
                title  is given then the date and time is printed
                instead.

     -12        Identify 'unmarked' waveforms as 12-bits.

     -nncoeff   Specify # coefficients to use for  LPC  analysis.
                Default: 2+samprate/1000.

MAIN MENU
     zoom       Zoom into selected region of the signal.

     up         Zoom out back to previous region of the signal.

     left       Scroll to view the immediately previous time.

     right      Scroll to view the immediately later time.

     top        Display the whole waveform.

     print      Prints display.  Requests a  print  title  before
                printing in background.

     quit       Exits program.

MOUSE COMANDS
  ON WAVEFORM
     left       Positions left cursor.

     middle     Replays waveform between cursors.

     right      Positions right cursor.

  ON SPECTRUM
     any        Calculates  and  draws  spectrum  from   waveform
                between current cursors.

VERSION/AUTHOR
     1.0  Mark Huckvale

SOURCE
     /users/mark/sfs/man/../contrib/teach/esform.c






SFS                     Last change: UCL                        2



