


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



NAME
     prep - waveform preparation

SYNOPSIS
     prep (-a|-16|-s scaledb) (-p|-d) (-n) (-i item) file

DESCRIPTION
     prep is a program to perform standard  waveform  preparation
     functions of AGC, pre-emphasis and de-emphasis or inversion.
     The pre-emphasis and de-emphasis  coefficient  is  fixed  at
     0.96.   Multiple  options  work  together (not "p" and "d"),
     order of effect is emphasis, agc, inversion.  One  operation
     must be selected.

     Options and their meanings are:

     -I         Identify program and exit.

     -a         Select   automatic   gain   adjustment,   Maximum
                (minimum) of waveform is set to 2047 (-2047).

     -16        Select   automatic   gain   adjustment,   Maximum
                (minimum) of waveform is set to 16383 (-16383).

     -sscaledb  Scale waveform by supplied number of  db  (+ve  =
                amplify, -ve = attenuate).

     -p         Select pre-emphasis, lift spectrum by  6db/octave
                > 100Hz.

     -d         Select   de-emphasis,   flatten    spectrum    by
                6db/octave > 100Hz.

     -n         Select waveform inversion.

     -iitem     Select input item.

INPUT ITEMS
     1.xx       Any speech item.

     2.xx       Any excitation item.

VERSION/AUTHOR
     1.2 - Mark Huckvale.

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








Sun Release 4.1         Last change: UCL                        1



