| Características de transmisión de los microteléfonos digitales de banda ancha (150-7000 Hz) |
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La presente Recomendación revisada expone los requisitos de calidad audio de los microteléfonos que transmiten en banda ancha (7 kHz). Los métodos de prueba asociados para verificar la calidad audio de banda ancha figuran en el anexo A.Se especifican requisitos y métodos de prueba para los principales parámetros de transmisión de banda audio ancha, incluidos los niveles, respuesta de frecuencia, ruido, distorsión, señales espurias, efecto local, trayecto del eco y retardo. La transmisión de audio en banda ancha representa un adelanto considerable con respecto a la telefonía tradicional y ofrece una calidad considerablemente mejorada.La revisión más importante que se ha hecho en esta versión de la Recomendación consiste en adoptar el algoritmo de índices de sonoridad en banda ancha del anexo G/P.79. |
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| Citation: |
https://handle.itu.int/11.1002/1000/7823 |
| Series title: |
P series: Telephone transmission quality, telephone installations, local line networks
P.300-P.399: Voice terminal characteristics |
| Approval date: |
2005-06-06 |
| Approval process: | AAP |
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Status: |
Superseded |
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Maintenance responsibility: |
ITU-T Study Group 12 |
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Further details: |
Patent statement(s)
Development history
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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P Suppl. 10 (11/1988)
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Considerations relating to transmission characteristics for analogue handset telephones
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In force
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-
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here
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here
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P Suppl. 16 (11/1988)
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Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)
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In force
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-
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here
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here
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P Suppl. 20 (03/1993)
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Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses
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In force
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-
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here
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here
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P Suppl. 23 (02/1998)
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ITU-T coded-speech database
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In force
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here
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here
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here
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P Suppl. 24 (10/2005)
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Parameters describing the interaction with spoken dialogue systems
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In force
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here
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here
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here
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P Suppl. 25 (01/2011)
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Parameters describing the interaction with multimodal dialogue systems
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In force
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here
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here
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here
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P Suppl. 26 (09/2017)
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Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality
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In force
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here
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here
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here
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P Suppl. 28 (09/2020)
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Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12
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In force
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here
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here
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here
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P Suppl. 31 (01/2025)
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Subjective quality evaluation of audiovisual communication in videotelephony services
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In force
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here
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here
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here
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