rel5.0.me

来自「speech signal process tools」· ME 代码 · 共 373 行 · 第 1/2 页

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.he 'ESPS Version 5.0 Release Notes''page %'
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ESPS Version 5.0 Release Notes
.sp
Document version: 1.8 9/10/93
.sh 1 "INTRODUCTION"
.lp
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 \fIeinfo\fP (1\-\s-1ESPS\s+1) or
\fIeversion\fP (1\-\s-1ESPS\s+1).
.lp
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.
.lp
Extensive changes were made in the previous release (ESPS Version 4.2;
\fIwaves+\fR Version 3.1).  These changes were primarily 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 \fI$ESPS_BASE/doc/rel4.2.doc\fR 
and \fI$ESPS_BASE/doc/wrel3.1.doc\fR.
.sh 1 "SUMMARY OF MAJOR CHANGES"
.lp
Major highlights include:
.ip \ \ \ \(bu
major improvements to the filter design and filtering programs
.ip \ \ \ \(bu
new analysis and synthesis programs
.ip \ \ \ \(bu
improved hardcopy output
.ip \ \ \ \(bu
updated documentation
.sh 1 "NEW PROGRAMS"
.sh 2 "ANALYSIS/SYNTHESIS PROGRAMS"
.lp
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 experimentation with intermediate results.  
They are intended to replace the older \fIlpcana\fR(1-ESPS) 
and \fIlpcsynt\fR(1-ESPS).
The following is a list of new ESPS 5.0 speech analysis/synthesis programs:
.ip \fIepochs\fR 
A pitch-epoch estimation program.  Pitch epochs
are computed by dynamic programming optimization algorithm from 
speech residual.  \fIEpochs\fR also attempts to estimate the voicing state
of speech residual.  Use its various parameters to control the estimation.
.ip \fIformsy\fR
This is n-formant synthesizer.  Controls over bandwidths, synthesis rate,
F0 and formant characteristics are provided.
.ip \fIget_f0\fR
A faster F0 estimation program than \fIformant\fR(1-ESPS).  
Unlike \fIformant\fR, \fIget_f0\fR has a simple interface - one FEA_SD
input to produce one FEA file output, with no intermediate files produced.
In addition, \fIget_f0\fR is more flexible in controlling F0 
characteristics by means of various parameters.  Highpass filtering 
for input signal in \fIformant\fR is not automatically performed in 
\fIget_f0\fR to save computational time.
.ip \fIget_resid\fR
A program to compute speech residual by inverse filtering.  The speech
residual is required for pitch-epoch estimation program \fIepochs\fR(1-ESPS).
Use \fIrefcof\fR(1-ESPS) to compute fixed-frame based LPC or reflection 
coefficients before inverse filtering.
.ip \fIlp_syn\fR
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.
.ip \fImask\fR
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 \fIepochs\fR often misclassifies
unvoiced regions as voiced, you can use \fImask\fR to suppress the
pitch epochs in unvoiced regions.
.ip \fIps_ana\fR 
This computes LP parameters pitch-synchronously.  Analysis frames
are based on the pitch-epoch impulse files produced by \fIepochs\fR.
Output analysis results are periodically resampled.  \fIPs_ana\fR
also computes F0 trajectory pitch-synchronously. 
.ip \fIsyntdemo\fR 
This is a demonstration shell script that introduces the new ESPS 
analysis/synthesis programs and also serves as an general example of
utilizing \fIxwaves\fR, the signal visualization tool, and XIG (X-interface 
Generation), the X-Window user-interface customization facility, for 
interactive DSP programming.  You can find this script in \fI$ESPS_BASE/demo\fR.
.sh 2 "NEW FILTER PROGRAMS"
.ip \fIcb_filt\fR
desings a multiband FIR filter or a differentiator by
constraint-based algorithm based on
\fIMeteor: A constraint-based FIR filter design program\fR, 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.
.ip \fIpkmc_filt\fR
designs an equi-ripple FIR filter by Parks-McClellan algorithm.  It
designs multiband filter, differentiator, and Hilbert transformer.
.ip \fIwin_filt\fR
designs a multi-band FIR filter using Kaiser windowing method.
.ip \fIxfir_filt\fR
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.
.sh 2 "OTHER NEW PROGRAMS"
.ip \fIebanner\fR
a cute program that 
converts ASCII text into  a  sampled  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.
.ip \fImeter\fR
this is a X-window based front-end program for ESPS
recording programs to control and monitor recording process.
.ip \fIps2frame\fR 
this program is used to convert embedded PostScript
files produced by the \fIprint graphic\fR feature of \fIxwaves\fR and
other programs to a form that can be imported into \IFrameMaker\fR.   We
believe that the embedded Postscript files produced by our programs is
legal PostScript, but \fIFrame\fR will not handle these files, because
of the user of \fIBoundingBox: (atend)\fR near the top of the file.
\fIps2frame\fR replaces this with the real boundingbox information that
is located near the end of the file.
.ip \fIspec_subr\fR
this is a new program for
selecting frequency subranges of FEA_SPEC files.  The output is a 
FEA_SPEC file containing 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.
.ip \fIxspecav\fR
to be called from \fIxwaves\fR.  The new xspecav uses
filtering 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 windows, with its
center corresponding to the time cursor.
.ip \fIzst\fR
a shell script which sets start times to zero and
adjusts corresponding label files, has been added.
.sh 1 "CHANGES TO ESPS PROGRAMS"
.ip \fIaddfea\fR
there was a bug that caused core dumps on some
architectures when
the length of the comment added with the \fB-c\fR option was exactly 11.
.ip \fIatosps\fR
same fix as for \fIfea_edit\fR above.
.ip \fIbtosps\fR
A bug was fixed that sometimes caused btosps to put
an incorrect value for the header item \fImax_value\fR in its output file.
.ip \fIclassify\fR
added parameter file processing and a default
parameter file.
.ip \fIclassify\fR
added warning message if 0 determinant of inverse
covariance is found.  
.ip \fIfbuttons\fR
added \fB-s\fR option to specify a scrollable list
in the panel.
.ip \fIfbuttons\fR
added \fB-q\fR option to allow suppression of quit
button; added \fB-Q\fR option to allow arbitrary label for quit button;
added \fB-l\fR 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.
.ip \fIfbuttons\fR
\fB-c\fR and \fB-h\fR options were added.
If \fB-c\fR 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 vertically.  If \fB-h\fR is used,
they are laid out horizontally.
.ip \fIfea_edit\fR