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speech signal process tools

          specification specifies the indices of a subsequence of
          the  elements of the named field that are to be used as
          the spectral parameters.

     <EM>spec</EM>_<EM>rep</EM> - <EM>string</EM>
          A name or abbreviation for the type of spectral parame-
          ters.  Acceptable values include "RC" (reflection coef-
          ficients), "LAR" (log area ratios), "AUTO"  (normalized
          autocorrelation  coefficients),  "AFC"  (autoregressive
          filter coefficients),  "CEP"  (cepstrum  coefficients),
          and  "LSF"  (line spectral frequencies).  See the docu-
          mentation for reps_rc(<EM>3</EM>-<EM>ESPSsp</EM>).  This  parameter  must
          be  explicitly  specified  in the parameter file unless
          the input file is a FEA_ANA file and the <STRONG>-G</STRONG>  option  is
          not  specified.   The  default in that case is the con-
          tents of the generic header item <EM>spec</EM>_<EM>rep</EM>.

     <EM>power</EM>_<EM>field</EM> - <EM>string</EM>
          A field containing the total  power  of  the  spectrum.
          Either  this  parameter  or  <EM>power</EM>  must  be explicitly
          specified in the parameter file unless the  input  file
          is  a  FEA_ANA file and the <STRONG>-G</STRONG> option is not specified.
          The default in that case is "raw_power".

     <EM>power</EM> - <EM>float</EM>
          A numerical value for the total power of the  spectrum.
          This  value is used, and applies to all records, unless
          the parameter <EM>power</EM>_<EM>field</EM> is defined and names a  field
          that  exists in the input file.  In that case, the con-
          tents of the named field are used instead.

     <EM>samp</EM>_<EM>freq</EM>_<EM>name</EM> - <EM>string</EM>
          The name of a generic header  item  that  contains  the
          sampling frequency.  Either this parameter or <EM>samp</EM>_<EM>freq</EM>
          must be explicitly  specified  in  the  parameter  file
          unless  the  input  file  is  a FEA_ANA file and the <STRONG>-G</STRONG>
          option is not specified.  The default in that  case  is
          "src_sf".

     <EM>samp</EM>_<EM>freq</EM> - <EM>float</EM>
          A numerical value for  the  sampling  frequency.   This
          values  is  used unless the parameter <EM>samp</EM>_<EM>freq</EM>_<EM>name</EM> is
          defined and names a generic header item that exists  in
          the  input file.  In that case, the value of the header
          item takes precedence.


</PRE>
<H2>ESPS HEADERS</H2><PRE>
     The values <EM>common</EM>.<EM>type</EM>, <EM>variable</EM>.<EM>refer</EM>, and <EM>hd</EM>.<EM>fea</EM>-&gt;<EM>fea</EM>_<EM>type</EM>
     are  read  from the header of the input file.  The following
     generic header items may also read if the input is a FEA_ANA
     file:   <EM>order</EM>_<EM>vcd</EM>,  <EM>order</EM>_<EM>unvcd</EM>,  <EM>src</EM>_<EM>sf</EM>,  <EM>spec</EM>_<EM>rep</EM>  <EM>frmlen</EM>,
     <EM>start</EM>, <EM>nan</EM>, and <EM>maxpulses</EM>.

     The following parameters are written to the  header  of  the
     FEA_SPEC   file:    <EM>common</EM>.<EM>tag</EM>,   <EM>common</EM>.<EM>prog</EM>,  <EM>common</EM>.<EM>vers</EM>,
     <EM>common</EM>.<EM>progdate</EM>, <EM>variable</EM>.<EM>refer</EM>, <EM>frmlen</EM> (long), <EM>sf</EM>  (float),
     <EM>frame</EM>_<EM>meth</EM>  (CODED), <EM>freq</EM>_<EM>format</EM> (CODED), <EM>spec</EM>_<EM>type</EM> (CODED),
     <EM>contin</EM> (CODED), <EM>num</EM>_<EM>freqs</EM> (LONG).  For  input  FEA_ANA  (5 -
     ESPS)  files,  <EM>order</EM>_<EM>vcd</EM>  (LONG)  and <EM>order</EM>_<EM>unvcd</EM> (LONG) are
     added to the output file header.   In  addition,  the  input
     file is added as the source of the output file, and the com-
     mand line is added as a comment.

     The generic header item <EM>start</EM>_<EM>time</EM> is written in the  output
     file.    The   value  written  is  computed  by  taking  the
     <EM>start</EM>_<EM>time</EM> value from the header of the input file (or zero,
     if  such  a  header item doesn't exist) and adding to it the
     offset time (from the beginning of the input  file)  of  the
     first  point  or  record  processed.  If <EM>record</EM>_<EM>freq</EM> doesn't
     exist in the input file, it defaults to 1.  Otherwise, it is
     copied  to  the  output  file  header.   This item gives the
     number of records per second of original data analyzed.


</PRE>
<H2>SEE ALSO</H2><PRE>
     <STRONG><A HREF="../man1.html/refcof.1.html">refcof (1-ESPS)</A></STRONG>, <STRONG><A HREF="../man1.html/plotspec.1.html">plotspec (1- ESPS)</A></STRONG>,  <STRONG><A HREF="../man3.html/reps_rc.3.html">reps_rc  (3 - ESPSsp)</A></STRONG>,
     <STRONG><A HREF="../man5.html/FEA_SPEC.5.html">FEA_SPEC (5-ESPS)</A></STRONG>, <STRONG><A HREF="../man5.html/ESPS.5.html">ESPS (5-ESPS)</A></STRONG>,


</PRE>
<H2>DIAGNOSTICS</H2><PRE>
     me_spec: unknown option: -<EM>letter</EM>
     Usage: me_spec [-n num_freqs][ - o  order][ - r  range][ - x
     debug_level][-G][-P params] ana_file spec_file
     me_spec: too many file names specified.
     me_spec: too few file names specified.
     me_spec: number of frequencies <EM>n</EM> is less than 2.
     me_spec: can't open <EM>filename</EM>: <EM>reason</EM>
     me_spec: <EM>filename</EM> is not an ESPS file
     me_spec: Can't start before beginning of file.
     me_spec: Last record precedes first.
     me_spec: Name of spec_param field not specified.
     me_spec: Unrecognized spectral representation.
     me_spec: Spectral representation not specified.
     me_spec: Field <EM>name</EM> and  symbol  "power"  undefined  or  not
     float.
     me_spec: Neither field nor default value  for  power  speci-
     fied.
     me_spec: Header item <EM>name</EM> and symbol  "samp_freq"  undefined
     or not float.
     me_spec: No header-item name or default value  for  sampling
     frequency.
     me_spec: Input field <EM>name</EM> undefined.
     me_spec: Input field <EM>name</EM> undefined or not float.
     me_spec: Input field length <EM>n</EM> too small.
     me_spec: can't allocate memory--input spectral parameters
     me_spec: can't allocate memory--lpc filter
     me_spec: can't allocate memory--reflection coefficients
     me_spec: unknown spectral parameter type

     When <EM>debug</EM>_<EM>level</EM>!=0, the  reflection  coefficients,  average
     raw power, location tag, and inverse filter coefficients are
     listed for each record.


</PRE>
<H2>BUGS</H2><PRE>
     The <EM>frame</EM>_<EM>len</EM> field in an input FEA_ANA record,  defined  as
     ``number of samples to synthesize from frame,'' is copied to
     the  <EM>frame</EM>_<EM>len</EM>  field  in  a  spectral  record,  defined  as
     ``number  of  samples in analysis window.''  This is invalid
     if the FEA_ANA file was produced by a program for which  the
     two are different.


</PRE>
<H2>WARNINGS</H2><PRE>
     In order to produce <STRONG><A HREF="../man5.html/FEA_SPEC.5.html">FEA_SPEC (5-ESPS)</A></STRONG> that can  be  overlaid
     on  <STRONG><A HREF="../man5.html/FEA_SPEC.5.html">FEA_SPEC (5-ESPS)</A></STRONG> files produced by <STRONG><A HREF="../man1.html/fft.1.html">fft (1-ESPS)</A></STRONG>, the <STRONG>-G</STRONG>
     option should be used. This produces a generic FEA_SPEC (5 -
     ESPS) file without the voicing information.


</PRE>
<H2>FUTURE CHANGES</H2><PRE>

</PRE>
<H2>AUTHOR</H2><PRE>
     S. Shankar Narayan.  Made SDS compatible by Joe Buck.   Ori-
     ginally called <EM>pltspc</EM>, later <EM>fanaspec</EM>. Modified for ESPS and
     number of frequencies made variable by Rod Johnson, Entropic
     Speech,  Inc.   Modified  for  FEA_ANA  files by John Shore.
     Additions by Rod Johnson  to  accept  spec_reps  other  than
     reflection  coefficients  and  to  accept  files  other than
     FEA_ANA files.




















</PRE>
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