The current copyright on the scm codes for HTS voices is
;;  ----------------------------------------------------------------  ;;
;;                 Nagoya Institute of Technology and                 ;;
;;                     Carnegie Mellon University                     ;;
;;                         Copyright (c) 2002                         ;;
;;                        All Rights Reserved.                        ;;
;;                                                                    ;;
;;  Permission is hereby granted, free of charge, to use and          ;;
;;  distribute this software and its documentation without            ;;
;;  restriction, including without limitation the rights to use,      ;;
;;  copy, modify, merge, publish, distribute, sublicense, and/or      ;;
;;  sell copies of this work, and to permit persons to whom this      ;;
;;  work is furnished to do so, subject to the following conditions:  ;;
;;                                                                    ;;
;;    1. The source code must retain the above copyright notice,      ;;
;;       this list of conditions and the following disclaimer.        ;;
;;                                                                    ;;
;;    2. Any modifications to the source code must be clearly         ;;
::       marked as such.                                              ;;
;;                                                                    ;;
;;    3. Original authors' names are not deleted.                     ;;
;;                                                                    ;;
;;    4. The authors' names are not used to endorse or promote        ;;
;;       products derived from this software without specific prior   ;;
;;       written permission.                                          ;;
;;                                                                    ;;
;;  NAGOYA INSTITUTE OF TECHNOLOGY, CARNEGIE MELLON UNIVERSITY AND    ;;
;;  THE CONTRIBUTORS TO THIS WORK DISCLAIM ALL WARRANTIES WITH        ;;
;;  REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF      ;;
;;  MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NAGOYA INSTITUTE   ;;
;;  OF TECHNOLOGY, CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS    ;;
;;  BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR   ;;
;;  ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        ;;
;;  PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER    ;;
;;  TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR  ;;
;;  PERFORMANCE OF THIS SOFTWARE.                                     ;;
;;                                                                    ;;

The copyright on other binaries is

/* ----------------------------------------------------------------- */
/*           The HMM-Based Speech Synthesis System (HTS)             */
/*           developed by HTS Working Group                          */
/*           http://hts.sp.nitech.ac.jp/                             */
/* ----------------------------------------------------------------- */
/*                                                                   */
/*  Copyright (c) 2001-2008  Nagoya Institute of Technology          */
/*                           Department of Computer Science          */
/*                                                                   */
/*                2001-2008  Tokyo Institute of Technology           */
/*                           Interdisciplinary Graduate School of    */
/*                           Science and Engineering                 */
/*                                                                   */
/* All rights reserved.                                              */
/*                                                                   */
/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
/*                                                                   */
/* - Redistributions of source code must retain the above copyright  */
/*   notice, this list of conditions and the following disclaimer.   */
/* - 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.                                          */
/* - Neither the name of the HTS working group nor the names of its  */
/*   contributors may be used to endorse or promote products derived */
/*   from this software without specific prior written permission.   */
/*                                                                   */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND            */
/* CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER OR CONTRIBUTORS */
/* 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.                                       */
/* ----------------------------------------------------------------- */