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<HTML><BODY><PRE></PRE><H2>NAME</H2><PRE> lpcsynt - perform pitch-synchronous synthesis from FEA_ANA files</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>lpcsynt</STRONG> [ <STRONG>-x</STRONG> ] [ <STRONG>-P</STRONG> <EM>param</EM>_<EM>file</EM> ] [ <STRONG>-r</STRONG> <EM>range</EM> ] [ <STRONG>-p</STRONG> <EM>range</EM> ] <EM>input</EM>_<EM>fea</EM> <EM>output</EM>_<EM>sd</EM></PRE><H2>DESCRIPTION</H2><PRE> This program must be used with files with a format such as that created by <STRONG><A HREF="../man1.html/lpcana.1.html">lpcana(1-ESPS)</A></STRONG>. Consider use of <EM>lp</EM>_<EM>syn</EM>(1- ESPS). While still supported, <STRONG><A HREF="../man1.html/lpcana.1.html">lpcana(1-ESPS)</A></STRONG> and <EM>lpcsynt</EM>(1 - ESPS) should be considered obsolescent. <EM>Lpcsynt</EM> takes as input an ESPS <STRONG><A HREF="../man5.html/FEA_ANA.5.html">FEA_ANA(5 - ESPS)</A></STRONG> file (<EM>input</EM>_<EM>fea</EM>) containing analysis information, performs pitch-synchronous synthesis, and outputs the synthesized speech to an ESPS <STRONG><A HREF="../man5.html/FEA_SD.5.html">FEA_SD(5-ESPS)</A></STRONG> file <EM>output</EM>_<EM>sd</EM>. The output file is written in short format. If "-" is specified as the input file name, standard input is used; if "-" is specified as the output file name, stan- dard output is used.</PRE><H2>OPTIONS</H2><PRE> The following options are supported: <STRONG>-x</STRONG> This option is specified for printing debugging mes- sage in the standard error. <STRONG>-P</STRONG> <EM>param</EM>_<EM>file</EM> uses the parameter file <EM>param</EM>_<EM>file</EM> rather than the default which is <EM>params</EM>. <STRONG>-p</STRONG> <EM>range</EM> Selects a subrange of points to be synthesized, where the start and end points are defined with respect to the original SD file that is the source of the input FEA_ANA file. The range is specified using the format <EM>start</EM>-<EM>end</EM> or <EM>start</EM>:<EM>end</EM> or <EM>start</EM>:+<EM>nan</EM>. Either <EM>start</EM> or <EM>end</EM> may be omitted, in which case the omitted parameter defaults respectively to the start or end of the input FEA_ANA file. <STRONG>-r</STRONG> <EM>range</EM> <STRONG>r</STRONG> is a synonym for <STRONG>p</STRONG>.</PRE><H2>ESPS PARAMETERS</H2><PRE> The values of parameters obtained from the parameter file are printed if the environment variable ESPS_VERBOSE is 3 or greater. The default value is 3. The following parameters are read from the params file: <EM>post</EM>_<EM>filt</EM>_<EM>num</EM> - <EM>float</EM> A three element vector specifying the numerator of a pole-zero post processing filter. If no values are specified in the parameter file, the vector [1., -1., 0] is used. <EM>post</EM>_<EM>filt</EM>_<EM>den</EM> - <EM>float</EM> A three element vector specifying the denominator of a pole-zero post processing filter. If no values are specified in the parameter file, the vector [1., -.875, 0.] is used.</PRE><H2>ESPS COMMON</H2><PRE> ESPS Common is not processed.</PRE><H2>ESPS HEADERS</H2><PRE> The following parameters are read from the header of the input FEA_ANA file: <EM>start</EM>, <EM>nan</EM>, <EM>nominal</EM>_<EM>frame</EM>_<EM>size</EM>, <EM>and</EM> <EM>src</EM>_<EM>sf</EM>. <EM>Synt</EM> writes the following header items in the output FEA_SD file: <EM>synt</EM>_<EM>order</EM> (int), <EM>synt</EM>_<EM>method</EM> (coded), <EM>synt</EM>_<EM>interp</EM> (coded), <EM>synt</EM>_<EM>pwr</EM> (coded), <EM>v</EM>_<EM>excit</EM>_<EM>method</EM> (coded), and <EM>uv</EM>_<EM>excit</EM>_<EM>method</EM> (coded). Also, <EM>src</EM>_<EM>sf</EM> is copied from the input header and used as <EM>record</EM>_<EM>freq</EM> in the output FEA_SD file. In addition, the generic header item <EM>start</EM>_<EM>time</EM> (type DOU- BLE) 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 original sampled data file) of the first point writ- ten by <STRONG><A HREF="../man1.html/lpcsynt.1.html">lpcsynt (1-ESPS)</A></STRONG>.</PRE><H2>COMMENTS</H2><PRE> The synthesizer implementation is very simple. A single impulse is used as the excitation function for each pitch pulse in the case of voiced speech. A gaussian white noise sequence is used as the excitation function when the frame is unvoiced. Linear interpolation is performed (for each pulse) on the reflection coefficients, prior to synthesis.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="../man1.html/lpcana.1.html">lpcana (1-ESPS)</A></STRONG>, <STRONG><A HREF="../man5.html/ESPS.5.html">ESPS(5-ESPS)</A></STRONG>, <STRONG><A HREF="../man5.html/FEA_ANA.5.html">FEA_ANA(5-ESPS)</A></STRONG>, <STRONG><A HREF="../man5.html/FEA_SD.5.html">FEA_SD(5-ESPS)</A></STRONG>.</PRE><H2>BUGS</H2><PRE> None known.</PRE><H2>AUTHOR</H2><PRE> S. Shankar Narayan. Slight mods by John Shore. ESPS 3.0 modification by David Burton</PRE></BODY></HTML>⌨️ 快捷键说明
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