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Terminals and subjective and objective assessment methods
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P.10

Vocabulary for performance and quality of service  

P.11

Effect of transmission impairments  

P.16

Subjective effects of direct crosstalk; thresholds of audibility and intelligibility  

P.30

Transmission performance of group audio terminals (GATs)  

P.32

Evaluation of the efficiency of telephone booths and acoustic hoods  

P.33

[Withdrawn] Subscriber telephone sets containing either loudspeaking receivers or microphones associated with amplifiers  
Deleted after the relevant information contained in this Recommendation was incorporated in new ITU-T P.340

P.35

Handset telephones  

P.36

Efficiency of devices for preventing the occurrence of excessive acoustic pressure by telephone receivers  

P.38

[Withdrawn] Transmission characteristics of operator telephone systems (OTS)  

P.48

Specification for an intermediate reference system  

P.50

Artificial voices  

P.51

Artificial mouth  

P.52

Volume meters  

P.53

Psophometer for use on telephone-type circuits  
This Recommendation is published under alias number O.41

P.54

Sound level meters (apparatus for the objective measurement of room noise)  

P.55

Apparatus for the measurement of impulsive noise  

P.56

Objective measurement of active speech level  

P.57

Artificial ears  

P.58

Head and torso simulator for telephonometry  

P.59

Artificial conversational speech  

P.61

Methods for the calibration of condenser microphones  

P.62

[Withdrawn] Measurements on subscribers' telephone equipment  
P.62 is out of date and was deleted. The relevant text therein will be transferred to ITU-T P.35 during its revision

P.63

[Withdrawn] Methods for the evaluation of transmission quality on the basis of objective measurements  
As this Recommendation didn't contain technical description, but only references to other out of date Recommendations and Supplements, it became obsolete and was deleted

P.64

Determination of sensitivity/frequency characteristics of local telephone systems  

P.65

[Withdrawn] Objective instrumentation for the determination of loudness ratings  
P.65 is out of date and was deleted. The relevant text therein was transferred to ITU-T P.64

P.66

[Withdrawn] Methods for evaluating the transmission performance of digital telephone sets  
Deleted after having been merged with P.31 into ITU-T P.310

P.75

Standard conditioning method for handsets with carbon microphones  

P.76

Determination of loudness ratings; fundamental principles  

P.78

Subjective testing method for determination of loudness ratings in accordance with Recommendation P.76  

P.79

Calculation of loudness ratings for telephone sets  
Covering note, May 2000: Erratum Covering note, 24 October 2000: Corrigendum 1

P.80

Methods for subjective determination of transmission quality  
Renumbered P.800 when revised in 1996

P.82

[Withdrawn] Method for evaluation of service from the standpoint of speech transmission quality  
ITU-T P.82 - formerly P.77 (1984) - was deleted on 2009-06-30 since the four-point MOS scale that it describes is obsolete and replaced by the five-point scales defined in ITU-T P.800, P.800.1 and P.805

P.84

Subjective listening test method for evaluating digital circuit multiplication and packetized voice systems  

P.85

A method for subjective performance assessment of the quality of speech voice output devices  

P.300

Transmission performance of group audio terminals (GATs)  

P.310

Transmission characteristics for narrow-band digital handset and headset telephones  

P.31

Transmission characteristics for digital telephones  

P.311

Transmission characteristics for wideband digital handset and headset telephones  

P.313

Transmission characteristics for cordless and mobile digital terminals  

P.330

Speech processing devices for acoustic enhancement  

P.340

Transmission characteristics and speech quality parameters of hands-free terminals  
Former Rec. P.34, renumbered P.340

P.34

Transmission characteristics of hands-free telephones  

P.Imp340

Implementers' Guide for ITU-T Recommendation P.340  

P.341

Transmission characteristics for wideband digital loudspeaking and hands-free telephony terminals  

P.342

Transmission characteristics for narrow-band digital loudspeaking and hands-free telephony terminals  

P.350

Handset dimensions  

P.360

Efficiency of devices for preventing the occurrence of excessive acoustic pressure by telephone receivers and assessment of daily noise exposure of telephone users  
Former Rec. P.36, renumbered P.360

P.370

Coupling hearing aids to telephone sets  
Former Rec. P.37, renumbered P.370

P.37

Coupling hearing aids to telephone sets  

P.380

Electro-acoustic measurements on headsets  

P.381

Technical requirements and test methods for the universal wired headset or headphone interface of digital mobile terminals  

P.501

Test signals for use in telephonometry  
This Recommendation includes an electronic attachment containing test signals for telephonometry applications

P.502

Objective test methods for speech communication systems using complex test signals  

P.505

One-view visualization of speech quality measurement results  

P.561

In-service non-intrusive measurement device - Voice service measurements  

P.562

Analysis and interpretation of INMD voice-service measurements  

P.563

Single-ended method for objective speech quality assessment in narrow-band telephony applications  

P.Imp563

Implementers' Guide for ITU-T Recommendation P.563  

P.564

Conformance testing for voice over IP transmission quality assessment models  

P.581

Use of head and torso simulator for hands-free and handset terminal testing  

P.800

Methods for subjective determination of transmission quality  
Former Rec. P.80

P.800.1

Mean Opinion Score (MOS) terminology  

P.800.2

Mean opinion score interpretation and reporting  

P.805

Subjective evaluation of conversational quality  

P.806

A subjective quality test methodology using multiple rating scales  

P.81

Modulated noise reference unit (MNRU)  

P.810

Modulated noise reference unit (MNRU)  

P.830

Subjective performance assessment of telephone-band and wideband digital codecs  

P.83

Subjective performance assessment of telephone-band and wideband digital codecs  

P.Imp830

Implementer's Guide for P.830 (Subjective performance assessment of telephone-band and wideband digital codecs)  

P.831

Subjective performance evaluation of network echo cancellers  

P.832

Subjective performance evaluation of hands-free terminals  

P.833

Methodology for derivation of equipment impairment factors from subjective listening-only tests  

P.833.1

Methodology for the derivation of equipment impairment factors from subjective listening-only tests for wideband speech codecs  

P.834

Methodology for the derivation of equipment impairment factors from instrumental models  

P.834.1

Extension of the methodology for the derivation of equipment impairment factors from instrumental models for wideband speech codecs  

P.835

Subjective test methodology for evaluating speech communication systems that include noise suppression algorithm  

P.840

Subjective listening test method for evaluating circuit multiplication equipment  
Former ITU-T P.84

P.851

Subjective quality evaluation of telephone services based on spoken dialogue systems  

P.861

[Withdrawn] Objective quality measurement of telephone-band (300-3400 Hz) speech codecs  
P.861 was recognized as having certain limitations in specific areas of application. It was replaced by P.862, which contains an improved objective speech quality assessment algorithm. P.861 included one diskette containing test vectors for implementation verification of the PSQM algorithm

P.862

Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs  

P.862.1

Mapping function for transforming P.862 raw result scores to MOS-LQO  

P.862.2

Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs  

P.862.3

Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P.862.2  

P.863

Perceptual objective listening quality assessment  

P.863.1

Application guide for Recommendation ITU-T P.863  

P.Imp863

Implementer's Guides for ITU-T P.863  

P.880

Continuous evaluation of time-varying speech quality  

P.910

Subjective video quality assessment methods for multimedia applications  

P.911

Subjective audiovisual quality assessment methods for multimedia applications  

P.912

Subjective video quality assessment methods for recognition tasks  

P.913

Methods for the subjective assessment of video quality, audio quality and audiovisual quality of Internet video and distribution quality television in any environment  

P.920

Interactive test methods for audiovisual communications  

P.930

Principles of a reference impairment system for video  

P.931

Multimedia communications delay, synchronization and frame rate measurement  

P.1010

Fundamental voice transmission objectives for VoIP terminals and gateways  

P.1100

Narrow-band hands-free communication in motor vehicles  

P.1110

Wideband hands-free communication in motor vehicles  

P.1201

Parametric non-intrusive assessment of audiovisual media streaming quality  

P.1201.1

Parametric non-intrusive assessment of audiovisual media streaming quality - Lower resolution application area  

P.1201.2

Parametric non-intrusive assessment of audiovisual media streaming quality - Higher resolution application area  

P.1202

Parametric non-intrusive bitstream assessment of video media streaming quality  

P.1202.1

Parametric non-intrusive bitstream assessment of video media streaming quality - Lower resolution application area  

P.1202.2

Parametric non-intrusive bitstream assessment of video media streaming quality - Higher resolution application area  

P.1301

Subjective quality evaluation of audio and audiovisual multiparty telemeetings  

P.1401

Methods, metrics and procedures for statistical evaluation, qualification and comparison of objective quality prediction models  

P.1501

Subjective testing methodology for web browsing  

P.Sup1

[Withdrawn] Precautions to be taken for correct installation and maintenance of an IRS  

P.Sup3

[Withdrawn] Models for predicting transmission quality from objective measurements  

P.Sup10

Considerations relating to transmission characteristics for analogue handset telephones  

P.Sup11

[Withdrawn] Some effects of sidetone  

P.Sup14

[Withdrawn] Subjective performance assessment of digital processes using the modulated noise reference unit (MNRU)  

P.Sup15

[Withdrawn] Wideband (7 kHz) modulated noise reference unit (MNRU) with noise shaping  

P.Sup16

Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)  

P.Sup17

[Withdrawn] Direct loudness balance against the intermediate reference system (IRS) for the subjective determination of loudness ratings  
Replaced by annex D of P.78

P.Sup19

[Withdrawn] Information on some loudness loss related ratings  

P.Sup20

Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses  

P.Sup21

[Withdrawn] The principles of a composite source signal as an example of a measurement signal to determine the transfer characteristics of terminal equipment  

P.Sup22

[Withdrawn] Transmission characteristics of wideband audio telephones  
Replaced by ITU-T P.311 and P.341

P.Sup23

ITU-T coded-speech database  

P.Sup24

Parameters describing the interaction with spoken dialogue systems  

P.Sup25

Parameters describing the interaction with multimodal dialogue systems  

P.Sup26

Scenarios for the subjective quality evaluation of audio and audiovisual multiparty telemeetings  

 

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Updated : 2014-09-17