Artificial ears |
|
This Recommendation specifies the electroacoustical characteristics of Artificial Ears to be used for telephonometric measurements. Three devices are specified: a telephone band type for measurements on traditional telephone sets, an insert type and a type faithfully reproducing the characteristics of the human ear.The latter type (Type 3) is specified in four configurations. The fourth one (Type 3.4), which is a new addition to this Recommendation, consists in a Simplified (e.g. geometrically describable) Pinna Simulator. Also the requirements for Type 3.2 (Telecom Pinna) are improved, taking into account the experience gained by the manufacturer in the proserial production of the device.Another important improvement introduced in the revision of this Recommendation is the specification of a new calibration methodology and the definition of input impedance requirements for Type 1 Artificial Ear (IEC 318). |
|
Citation: |
https://handle.itu.int/11.1002/1000/3636 |
Series title: |
P series: Telephone transmission quality, telephone installations, local line networks P.50-P.59: Objective measuring apparatus |
Approval date: |
1996-08-30 |
Approval process: | TAP |
Status: |
Superseded |
Maintenance responsibility: |
ITU-T Study Group 12 |
Further details: |
Patent statement(s)
|
|
|
|
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
|
|