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ITU-T P.501 (2017) Amd. 1 (06/2018)

超宽带和全屏段应用的AM-FM测试信号

ITU-T P.501建议书的修正1将调幅-调频（AM-FM）测试信号的适用性扩展到超宽带和全频带应用。1) 第7.2.4.1款在“表7-6列出了宽带应用的相应属性。”后加入如下案文：该信号也用于超宽带和全频带应用。注 – 人类语言中，超过7 kHz的能量主要出现在非浊音部分，浊音部分的能量较少。AM - FM信号模拟人类语言浊音部分的谐波含量，一般认为7 kHz频率范围在超宽带和全频带足以区分同时发言者，例如在双方同时讲话的过程中做出评估。

Citation:	https://handle.itu.int/11.1002/1000/13623
Series title:	P series: Telephone transmission quality, telephone installations, local line networks P.500-P.599: Objective measuring apparatus
Approval date:	2018-06-13
Approval process:	AAP
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 12
Further details:	Patent statement(s) Development history Associated test signals

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
7.1	P.501 (2020) Amd. 1 (06/2022)	In force	here	here	here
7	P.501 (05/2020)	In force	here	here	here
6.1	P.501 (2017) Amd. 1 (06/2018)	Superseded	here	here	here
6	P.501 (03/2017)	Superseded	here	here	here
5.3	P.501 (2012) Amd. 3 (06/2015)	Superseded	here	-	here
5.2	P.501 (2012) Amd. 2 (10/2014)	Superseded	here	here	here
5.1	P.501 (2012) Amd. 1 (07/2012)	Superseded	here	here	here
5	P.501 (01/2012)	Superseded	here	here	here
4	P.501 (12/2009)	Superseded	here	here	here
3	P.501 (06/2007)	Superseded	here	here	here
2.1	P.501 (2000) Amd. 1 (05/2004)	Superseded	here	here	here
2	P.501 (05/2000)	Superseded	here	here	here
2.0	P.501 (2000) Err. 1 (09/2001)	Superseded	-	-	here
1	P.501 (08/1996)	Superseded	here	here	here


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
Addition to Section 2.3 of the Handbook on Telephonometry	2000	here
Addition to Section 3 of the Handbook on Telephonometry	2000	here
Additions to the Handbook on Telephonometry	1999	here
Telephonometry	1992	here

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ITU-T Recommendations

ITU-T P.501 (2017) Amd. 1 (06/2018)