[recog~] is a speech recognition extern built around CMU's sphinx library (see license below). 

This extern still needs a lot of work still:

-output for text
-debug the 'auto' mode
-variable models (just some functionality code)
-better controls 
-general code cleanup

but it does work. 

This project is an old one that I recently blew the dust off of. I quit working on it 3 years ago because it turned out that pocketsphinx has a function call collision with pd's gui engine on linux. This causes (on linux) pd to crash anytime you try to decode. Back then I couldn't figure out how to resolve this issue without rebuilding either sphinx or pd with altered function names to avoid the collision. Clearly this is not an elegant solution. Now, I know more about libraries and dynamic loading, so I rewrote the extern to use the dynamic libpocketsphinx rather than the static one. Thus, in essence, the heart of [recog~] (recog_tilde_decode) is simply a wrapper for libpocketsphinx.so. This is older code so the style is kinda bad. I will continue to rewrite and improve the functionality as time allows.


Other things to think about are designing a pd patch to automate start/decode calls and building a sister extern that can be used to train a custom model.

sphinx
------
First of all, in order for this to work you need to get and install sphinxbase and pocketsphinx:
http://cmusphinx.sourceforge.net/wiki/tutorialpocketsphinx

On my computer, after building and installing the libraries, I had to move the sphinxbase.pc and pocketsphinx.pc files so that pkg-config could find them:

<path to sphinxbase> > sudo cp sphinxbase.pc /usr/share/pkgconfig/

and the same with pocketsphinx. 

If you are unfamiliar, you might want to read the 'learn' pages from the above url anyway to get acquainted.

Thanks Carnegie Melon University for this wonderful software!


building:
---------
Linux:
Drop the recog_tilde folder into Pd's extra folder and hit 

> make

in a terminal. You can also specify the include path (needed to find m_pd.h) by typing:

> make PDPATH=<full path to pd's src folder>

where the full path is something like /home/dmedine/Software/pd-0.45-4/src 

Mac:
You will need to change the fourth line of the makefile from:

current: pd_linux

to:

current: pd_darwin

then, it's the same as for linux. The makefile uses the same variable PDPATH for both linux and mac build options, so the same deal applies.

installing:
-----------
You will also need to tell Pd where the extern is. If it is in the extra folder, you should be fine just renaming the folder 'recog_tilde' to 'recog~' otherwise you will need to add the path to Pd's path list, or declare the path using the [declare] object with the -path flag and the path to recog~.pd_linux.

/*
[recog~] is a speech recognizer external for Pure Data written with the pocketsphinx API:
http://cmusphinx.sourceforge.net/
here is the copyright info for this excellent software:

 * ====================================================================
 * Copyright (c) 1999-2010 Carnegie Mellon University.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * This work was supported in part by funding from the Defense Advanced 
 * Research Projects Agency and the National Science Foundation of the 
 * United States of America, and the CMU Sphinx Speech Consortium.
 *
 * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
 * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ====================================================================

 my own copyright:

This code is entirely free to use for any reasonable purpose.
Copyright(c) David Medine March 2, 2014
http://imusic1.ucsd.edu/~dmedine
dmedine@ucsd.edu
****/