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ESPS Version 5.0 Release Notes                        page 1


               ESPS Version 5.0 Release Notes

               Document version: 1.8 9/10/93

1.  INTRODUCTION

This document provides notes for release 5.0 of ESPS.  These
release  notes  document  changes to ESPS since the revision
4.2.  This document can be viewed conveniently  using  einfo
(1-ESPS) or eversion (1-ESPS).

This document does not attempt to explain  new  and  changed
programs  in  detail.  Refer to the manual pages for all new
and changed programs for complete details needed to use  the
programs.

Extensive changes were made in the  previous  release  (ESPS
Version  4.2;  waves+ Version 3.1).  These changes were pri-
marily aimed at correcting errors and  numerous  operational
deficiencies  in  the  software.  Please refer to either the
printed copy of these earlier release notes, or see the  on-
line     version     in     $ESPS_BASE/doc/rel4.2.doc    and
$ESPS_BASE/doc/wrel3.1.doc.

2.  SUMMARY OF MAJOR CHANGES

Major highlights include:

   + major improvements to the filter design  and  filtering
     programs

   + new analysis and synthesis programs

   + improved hardcopy output

   + updated documentation

3.  NEW PROGRAMS

3.1.  ANALYSIS/SYNTHESIS PROGRAMS

A new set of ESPS analysis/synthesis  programs  are  created
for  ESPS 5.0 release.  These programs allow maximum control
over analysis/synthesis parameters and  permit  experimenta-
tion with intermediate results. They are intended to replace
the older lpcana(1-ESPS) and lpcsynt(1-ESPS).  The following
is  a  list  of  new ESPS 5.0 speech analysis/synthesis pro-
grams:

epochs
     A pitch-epoch estimation  program.   Pitch  epochs  are
     computed  by dynamic programming optimization algorithm
     from speech residual.  Epochs also attempts to estimate










ESPS Version 5.0 Release Notes                        page 2


     the  voicing state of speech residual.  Use its various
     parameters to control the estimation.

formsy
     This   is   n-formant   synthesizer.    Controls   over
     bandwidths, synthesis rate, F0 and formant characteris-
     tics are provided.

get_f0
     A faster F0 estimation  program  than  formant(1-ESPS).
     Unlike  formant,  get_f0  has  a simple interface - one
     FEA_SD input to produce one FEA file  output,  with  no
     intermediate  files  produced.   In addition, get_f0 is
     more flexible  in  controlling  F0  characteristics  by
     means  of  various  parameters.  Highpass filtering for
     input signal in formant is not automatically  performed
     in get_f0 to save computational time.

get_resid
     A program to compute speech residual by inverse filter-
     ing.   The  speech residual is required for pitch-epoch
     estimation program epochs(1-ESPS).  Use  refcof(1-ESPS)
     to  compute fixed-frame based LPC or reflection coeffi-
     cients before inverse filtering.

lp_syn
     This synthesizes speech signal  from  either  a  direct
     excitation  source  such  as speech residual, or from a
     parametric source such as F0, RMS data.  Controls  over
     parameter source, such as synthesis rate, are provided.

mask This is a useful program to suppress/fade segments of a
     FEA_SD  file  or  to mix segments of FEA_SD files.  For
     example, a FEA_SD file containing pitch epoch  impulses
     produced by epochs often misclassifies unvoiced regions
     as voiced, you can  use  mask  to  suppress  the  pitch
     epochs in unvoiced regions.

ps_ana
     This  computes   LP   parameters   pitch-synchronously.
     Analysis  frames  are  based on the pitch-epoch impulse
     files produced by epochs.  Output analysis results  are
     periodically  resampled.   Ps_ana also computes F0 tra-
     jectory pitch-synchronously.

syntdemo
     This is a demonstration shell  script  that  introduces
     the  new  ESPS  analysis/synthesis  programs  and  also
     serves as an general example of utilizing  xwaves,  the
     signal visualization tool, and XIG (X-interface Genera-
     tion), the X-Window user-interface customization facil-
     ity,  for  interactive  DSP  programming.  You can find
     this script in $ESPS_BASE/demo.










ESPS Version 5.0 Release Notes                        page 3


3.2.  NEW FILTER PROGRAMS

cb_filt
     desings a multiband FIR filter or a  differentiator  by
     constraint-based   algorithm   based   on   Meteor:   A
     constraint-based FIR filter design program,  Steiglitz,
     Parks,  and  Kaiser,  IEEE Trans. on Signal Processing,
     Vol 40, No.8, August, 1992.   This program  is  capable
     of designing a nearly flat filter on its passband.

pkmc_filt
     designs an equi-ripple FIR  filter  by  Parks-McClellan
     algorithm.   It  designs multiband filter, differentia-
     tor, and Hilbert transformer.

win_filt
     designs a multi-band FIR filter using Kaiser  windowing
     method.

xfir_filt
     This is a  shell  script  intended  as  an  example  of
     extending  ESPS  programs  with  XIG  user interface to
     build a customized filtering design  environment.   All
     ESPS FIR programs are used.

3.3.  OTHER NEW PROGRAMS

ebanner
     a cute program that converts ASCII text into   a   sam-
     pled   data   waveform  whose   wide-band   spectrogram
     image shows the ASCII text in  the  form   of   raster-
     graphics   fonts.   The  characters  are represented as
     a matrix of dots - some on and some off.  For each "on"
     dot,  a  wavelet  with  the  correct  location  in  the
     time-frequency  plane  is   generated.   All  of  these
     wavelets are then summed to produce the output.

meter
     this is a X-window based  front-end  program  for  ESPS
     recording  programs  to  control  and monitor recording
     process.

ps2frame
     this program is used  to  convert  embedded  PostScript
     files  produced  by the print graphic feature of xwaves
     and other programs to a form that can be imported  into
     IFrameMaker.    We believe that the embedded Postscript
     files produced by our programs is legal PostScript, but
     Frame  will not handle these files, because of the user
     of BoundingBox: (atend)  near  the  top  of  the  file.
     ps2frame replaces this with the real boundingbox infor-
     mation that is located near the end of the file.











ESPS Version 5.0 Release Notes                        page 4


spec_subr
     this is a new program for selecting frequency subranges
     of  FEA_SPEC files.  The output is a FEA_SPEC file con-
     taining the subset  of  the  data  in  the  input  file
     corresponding  to a range of frequencies specified with
     a command-line option. The output frequency  format  is
     "ARB_FIXED"---frequencies  are listed explicitly in the
     header.  A command running the program can be added  to
     the xwaves menu to provide a frequency-zoom capability.

xspecav
     to be called from xwaves.  The new xspecav uses filter-
     ing  operation  to  do  spectral averaging.  The filter
     kernels can be one of the rectangular, hanning, hamming
     window-  designed  FIRs.   The delay introduced by non-
     causal filtering is offset  by  start_time  --  a  time
     value  corresponding to filter delay is subtracted from
     the original  start_time.   This  means  the  resulting
     spectral  slice to which the cursor points comes from a
     region of the original data windowed by one of the win-
     dows, with its center corresponding to the time cursor.

zst  a shell script which  sets  start  times  to  zero  and
     adjusts corresponding label files, has been added.

4.  CHANGES TO ESPS PROGRAMS

addfea
     there was a bug that caused core dumps on  some  archi-
     tectures  when the length of the comment added with the
     -c option was exactly 11.

atosps
     same fix as for fea_edit above.

btosps
     A bug was fixed that sometimes caused btosps to put  an
     incorrect  value  for  the header item max_value in its
     output file.

classify
     added parameter file processing and a default parameter
     file.

classify
     added warning  message  if  0  determinant  of  inverse
     covariance is found.

fbuttons
     added -s option to specify a  scrollable  list  in  the
     panel.












ESPS Version 5.0 Release Notes                        page 5


fbuttons
     added -q option to allow suppression  of  quit  button;
     added  -Q option to allow arbitrary label for quit but-
     ton; added -l option to allow command for execution  on
     exit  via quit button; fixed some bugs in the placement
     geometry; and program buttons labels not  appear  above
     the buttons, to save space.

fbuttons
     -c and -h options were added.  If -c  is  specified,  a
     set  of exclusive panel choice buttons is used for each
     olwm submenu instead of a menu button with a  pull-down
     menu.  By default the choice buttons are laid out vert-
     ically.  If -h is used, they are laid out horizontally.

fea_edit
     fixed problem that fea_edit had with  files  containing
     CHAR generic header items.

feafunc
     an additional function exp10 (ten-to-the-power, inverse
     of log10) has been added.

feafunc
     minor changes were made to specify explicitly the value
     returned  by  convention by LOG for zero arg.  This was
     done for the benefit of the new function arr_op,  which