PESQ_metric

This repository provides a high-level user-friendly approach to calculating the PESQ.

---

*** README file for ITU-T P.862 Annex A (2005) Software *** Reference implementation of P.862, P.862.1 and P.862.2 and *** conformance data for P.862 and P.862.2 *** Version 2.0 (October 2005)

RECOMMENDATION TITLES

ITU-T P.862 (02/2001) - Perceptual evaluation of speech quality (PESQ), an objective method for end-to-end speech quality assessment of narrowband telephone networks and speech codecs.

ITU T P.862 Annex A (2005), Reference implementations and conformance testing for Recommendations P.862, P.862.1 and P.862.2.

ITU T P.862.1 (2003), Mapping function for transforming P.862 raw result scores to MOS-LQO.

ITU T P.862.2 (2005) Wideband extension to P.862 for the assessment of wideband telephone networks and speech codecs.

          ****************************************
          PESQ Intellectual Property Rights Notice
          ****************************************

DEFINITIONS:

For the purposes of this Intellectual Property Rights Notice the terms ‘Perceptual Evaluation of Speech Quality Algorithm’ and ‘PESQ Algorithm’ refer to the objective speech quality measurement algorithm defined in ITU-T Recommendation P.862; the term ‘PESQ Software’ refers to the C-code component of P.862. These definitions also apply to those parts of ITU-T Recommendation P.862.2 and its associated source code that are common with P.862.

NOTICE:

All copyright, trade marks, trade names, patents, know-how and all or any other intellectual rights subsisting in or used in connection with including all algorithms, documents and manuals relating to the PESQ Algorithm and or PESQ Software are and remain the sole property in law, ownership, regulations, treaties and patent rights of the Owners identified below. The user may not dispute or question the ownership of the PESQ Algorithm and or PESQ Software.

OWNERS ARE:

1.  British Telecommunications plc (BT), all rights assigned
   

   to Psytechnics Limited

2.  Royal KPN NV, all rights assigned to OPTICOM GmbH
   

RESTRICTIONS:

The user cannot:

1.  alter, duplicate, modify, adapt, or translate in whole or in
   

   part any aspect of the PESQ Algorithm and or PESQ Software

2.  sell, hire, loan, distribute, dispose or put to any commercial
   

   use other than those permitted below in whole or in part any aspect of the PESQ Algorithm and or PESQ Software

PERMITTED USE:

The user may:

1.  Use the PESQ Software to:
   

   i) understand the PESQ Algorithm; or ii) evaluate the ability of the PESQ Algorithm to perform its intended function of predicting the speech quality of a system; or iii) evaluate the computational complexity of the PESQ Algorithm, with the limitation that none of said evaluations or its results shall be used for external commercial use.

2.  Use the PESQ Software to test if an implementation of the PESQ
   

   Algorithm conforms to ITU-T Recommendation P.862.

3. With the prior written permission of both Psytechnics Limited and OPTICOM GmbH, use the PESQ Software in accordance with the above Restrictions to perform work that meets all of the following criteria: i) the work must contribute directly to the maintenance of an existing ITU recommendation or the development of a new ITU recommendation under an approved ITU Study Item; and ii) the work and its results must be fully described in a written contribution to the ITU that is presented at a formal ITU meeting within one year of the start of the work; and iii) neither the work nor its results shall be put to any commercial use other than making said contribution to the ITU. Said permission will be provided on a case-by-case basis.

ANY OTHER USE OR APPLICATION OF THE PESQ SOFTWARE AND/OR THE PESQ ALGORITHM WILL REQUIRE A PESQ LICENCE AGREEMENT, WHICH MAY BE OBTAINED FROM EITHER OPTICOM GMBH OR PSYTECHNICS LIMITED.

EACH COMPANY OFFERS OEM LICENSE AGREEMENTS, WHICH COMBINE OEM IMPLEMENTATIONS OF THE PESQ ALGORITHM TOGETHER WITH A PESQ PATENT LICENSE AGREEMENT. PESQ PATENT-ONLY LICENSE AGREEMENTS MAY BE OBTAINED FROM OPTICOM.

---

• OPTICOM GmbH * Psytechnics Limited *
• Naegelsbachstr. 38, * Fraser House, 23 Museum Street, *
• D- 91052 Erlangen, Germany * Ipswich IP1 1HN, England *
• Phone: +49 (0) 9131 53020 0 * Phone: +44 (0) 1473 261 800 *
• Fax: +49 (0) 9131 53020 20 * Fax: +44 (0) 1473 261 880 *
• E-mail: [email protected], * E-mail: [email protected], *
• www.opticom.de * www.psytechnics.com *

---

Further information is also available from www.pesq.org

---

ITU-T NOTICE

The ITU does not take any responsibility for difficulties or the impossibility of reading out the contents of these files. The ITU shall not be held liable for any direct, indirect, consequential or incidental damages arising out of the use of or inability to use the software.

The present notice must be included in any copy of the software or the information contained therein.

ITU CONTACTS

For distribution of update software, please contact: Sales Department ITU Place des Nations CH-1211 Geneve 20 SUISSE email: [email protected]

For reporting problems, please contact TSB helpdesk service at: TSB Helpdesk service ITU Place des Nations CH-1211 Geneve 20 SUISSE fax: +41 22 730 5853 email: [email protected]

================ FILE DESCRIPTION

This electronic material is provided as part of ITU-T Rec. P.862 Annex A. The package contains the following files:

README.TXT This file

SOURCE CODE: source\pesqmain.c Main program source\pesqdsp.c PESQ DSP routines source\pesqio.c File I/O source\dsp.c Basic DSP routines source\pesqmod.c PESQ high-level model source\dsp.h Header file for dsp.h source\pesq.h General header file source\pesqpar.h Perceptual definitions