1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T P.501 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 3 (06/2015) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Objective measuring apparatus Test signals for use in telephonometry Amendment
2、3: New Annex D Speech files with male/female sentences prepared for use with perceptual based objective speech quality prediction Recommendation ITU-T P.501 (2012) Amendment 3 ITU-T P-SERIES RECOMMENDATIONS TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Vocabulary and effects of transmiss
3、ion parameters on customer opinion of transmission quality Series P.10 Voice terminal characteristics Series P.30 P.300 Reference systems Series P.40 Objective measuring apparatus Series P.50 P.500 Objective electro-acoustical measurements Series P.60 Measurements related to speech loudness Series P
4、.70 Methods for objective and subjective assessment of speech quality Series P.80 P.800 Audiovisual quality in multimedia services Series P.900 Transmission performance and QoS aspects of IP end-points Series P.1000 Communications involving vehicles Series P.1100 Models and tools for quality assessm
5、ent of streamed media Series P.1200 Telemeeting assessment Series P.1300 Statistical analysis, evaluation and reporting guidelines of quality measurements Series P.1400 Methods for objective and subjective assessment of quality of services other than voice services Series P.1500 For further details,
6、 please refer to the list of ITU-T Recommendations. Rec. ITU-T P.501 (2012)/Amd.3 (06/2015) i Recommendation ITU-T P.501 Test signals for use in telephonometry Amendment 3 New Annex D Speech files with male/female sentences prepared for use with perceptual based objective speech quality prediction S
7、ummary Amendment 3 to Recommendation ITU-T P.501 (2012) introduces Annex D and updates the References clause to accommodate new entries cited. It includes a set of test speech signals based on Annex B, which are composed of 6 s female-male combinations. The signals are especially prepared for use in
8、 conjunction with ITU-T P.800-based applications and perceptual based objective models using ITU-T P.800-conformant speech samples. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T P.501 1996-08-30 12 11.1002/1000/3635 2.0 ITU-T P.501 2000-05-18 12 11.1002/1000/5080 2.1 ITU-T
9、 P.501 (2000) Amd. 1 2004-05-14 12 11.1002/1000/7411 3.0 ITU-T P.501 2007-06-29 12 11.1002/1000/9065 4.0 ITU-T P.501 2009-12-14 12 11.1002/1000/10657 5.0 ITU-T P.501 2012-01-13 12 11.1002/1000/11459 5.1 ITU-T P.501 (2012) Amd. 1 2012-07-14 12 11.1002/1000/11686 5.2 ITU-T P.501 (2012) Amd. 2 2014-10-
10、29 12 11.1002/1000/12330 5.3 ITU-T P.501 (2012) Amd. 3 2015-06-29 12 11.1002/1000/12515 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. i
11、i Rec. ITU-T P.501 (2012)/Amd.3 (06/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent o
12、rgan of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes th
13、e topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards ar
14、e prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendat
15、ion may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are use
16、d to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellect
17、ual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had received notic
18、e of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 20
19、15 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T P.501 (2012)/Amd.3 (06/2015) 1 Recommendation ITU-T P.501 Test signals for use in telephonometry Amendment 3 New Annex D Speech files with male/fema
20、le sentences prepared for use with perceptual based objective speech quality prediction1 1) References Add the following entries in alphanumeric order. ITU-T P.862 Recommendation ITU-T P.862 (2001), Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality ass
21、essment of narrow-band telephone networks and speech codecs. ITU-T P.862.3 Recommendation ITU-T P.862.3 (2007), Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P.862.2. ITU-T P.863 Recommendation ITU-T P.863 (2014), Perceptual objective listening quali
22、ty assessment. ITU-T P.863.1 Recommendation ITU-T P.863.1 (2014), Application guide for Recommendation ITU-T P.863. 2) Annex D Introduce the following Annex D after Annex C. Annex D Speech files with male/female sentences prepared for use with perceptual based objective speech quality prediction (Th
23、is annex forms an integral part of this Recommendation.) D.1 General Annex B provides 32 sentences spoken in eight languages by two male and two female talkers. These 32 sentences follow the technical specifications given in ITU-T P.863.1 and ITU-T P.862.3. Subjective and objective scores obtained f
24、or a given scenario depend also on the speech sample, and more on the talker and gender. This leads to systematic differences in quality scoring depending on the speech sample used. To minimize gender dependency, speech samples can be composed of male and female sentences. In particular, for mobile
25、field testing, sentence pairs consisting of one male and one female sentence are commonly used in practice. This annex provides a set of composed sentence pairs in different languages, which are based on the fullband speech samples in Annex B. These sentences are targeted at applications where many
26、scores have to be obtained in a minimum time in order to track fast _ 1 This amendment includes an electronic attachment containing the speech samples for Annex D. 2 Rec. ITU-T P.501 (2012)/Amd.3 (06/2015) changes or instabilities e.g., in mobile networks. For other applications, longer sequences of
27、 sentences as found in Annex B and described in ITU-T P.863.1 and ITU-T P.862.3 should be used. NOTE The sample provided in British English is not based on speech material in this Recommendation, rather composed of speech material used in the evaluation of ITU-T P.863. A composed speech sample is pr
28、ovided for the following languages: Dutch British English German Finnish French Italian Each of these male/female composed samples balances the systematic bias between male and female voices as known for ITU-T P.862 and ITU-T P.863. Additionally, the sentences and talkers have been selected to match
29、 mean opinion score (MOS) predictions for typical codec conditions that can be observed as averages over larger sets of speech samples. The processing procedure and presentation scheme follow ITU-T P.863.1 exactly. Each sample is 6 s in length, it has a leading and a trailing pause as well as a paus
30、e in between the two sentences that meet the requirements of ITU-T P.863.1 and ITU-T P.862.3. The noise floor in the speech pauses is 85 dBOv (A) r.m.s., but not digital silence. All sequences are stored as *.wav files, no calibration for the individual signals is provided. All signals are calibrate
31、d to the same level. In general, users of the test signals have to find a suitable digital amplification in order to achieve the required signal level for their applications for the test sentences, as well as for the noise sequences. General guidance on speech signal levels can be found in ITU-T P.8
32、00 and ITU-T P.79; further guidance and tools for speech processing can be found in ITU-T G.191. D.2 Test sentences All speech samples are processed so that the levels measured using a speech level voltmeter according to ITU-T P.56 are equal. The signals are available with 8 kHz and 48 kHz sampling
33、rates. Naming convention: Amendment 3 xyz_fm_flat_08k.wav Amendment 3 xyz_fm_flat_48k.wav D.2.1 Dutch Zijn auto was alweer kapot. (Female 2) Zij kunnen de besluiten nemen. (Male 1) D.2.2 English The glow deepened in the eyes of the sweet girl. (Female) The lamp shone with a steady green flame. (Male
34、) D.2.3 Finnish Ne eivt koskaan jdy. (Female 1) On opittava krsimn voidakseen el. (Male 2) Rec. ITU-T P.501 (2012)/Amd.3 (06/2015) 3 D.2.4 French On entend les gazouillis dun oiseau dans le jardin. (Female 1) Ma mre et moi faisons de courtes promenades. (Male 2) D.2.5 German Im Fernsehen wurde alles
35、 gezeigt. (Female 1) Sekunden entscheiden ber Leben. (Male 2) D.2.6 Italian Non ricordo pi dove ho messo quella bella foto. (Female 1) Tu non conosci ancora gli uomini. (Male 1) Printed in Switzerland Geneva, 2015 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D Ge
36、neral tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated s
37、ervices digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Environment and ICTs, climate change, e-waste, energy efficiency; construction, installation and protection of cables and oth
38、er elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Terminals and subjective and objective assessment
39、 methods Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
