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ITU-T P.340 (2000) Amd. 1 (10/2014)

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New Annex B: Objective test methods for multi-talker scenarios
The existing Recommendation ITU-T P.340 provides audio performance requirements and test methods for conference phones and hands-free terminals. These are limited to one-to-one meeting scenarios. Amendment 1 to Recommendation ITU-T P.340 introduces Annex B: Objective test methods for multi-talker scenarios.

Citation:	https://handle.itu.int/11.1002/1000/12324
Series title:	P series: Telephone transmission quality, telephone installations, local line networks P.300-P.399: Voice terminal characteristics
Approval date:	2014-10-29
Approval process:	AAP
Status:	In force
Maintenance responsibility:	ITU-T Study Group 12
Further details:	Patent statement(s) Development history

EditionsRelated Supplement(s)Implementer's guide(s)

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
6.3	P.340 (2000) Amd. 2 (01/2019)	In force	here	here	here
6.2	P.340 (2000) Amd. 1 (10/2014)	In force	here	here	here
6.1	P.340 (2000) Cor. 1 (03/2004)	In force	-	-	here
6	P.340 (05/2000)	In force	here	here	here
5	P.340 (08/1996)	Superseded	here	here	here
4	P.34 (03/1993)	Superseded	-	here	here
3	P.34 (11/1988)	Superseded	-	-	Not available
2	P.34 (10/1984)	Superseded	-	-	Not available
1	P.34 (11/1980)	Superseded	-	-	Not available


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
P Suppl. 10 (11/1988)	Considerations relating to transmission characteristics for analogue handset telephones	In force	-	here	here
P Suppl. 16 (11/1988)	Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)	In force	-	here	here
P Suppl. 20 (03/1993)	Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses	In force	-	here	here
P Suppl. 23 (02/1998)	ITU-T coded-speech database	In force	here	here	here
P Suppl. 24 (10/2005)	Parameters describing the interaction with spoken dialogue systems	In force	here	here	here
P Suppl. 25 (01/2011)	Parameters describing the interaction with multimodal dialogue systems	In force	here	here	here
P Suppl. 26 (09/2017)	Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality	In force	here	here	here
P Suppl. 28 (09/2020)	Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12	In force	here	here	here

Title	Approved on	Download
Implementers’ Guide for Recommendation ITU-T P.340	2008-05-30	here