Below one may find the list of ITU-T Recommendations that contain freely available test signals for download.
Each link below opens a webpage with a short description of the relevant content and a link to download the relevant test signals.
The signals available here constitute part of the corresponding ITU-T Recommendations and are protected by copyrights laws.
You may use them during product or service development for the purpose of implementing the corresponding ITU-T Recommendations.
In the downloading section, when applicable, one can preview or hear samples of the available signal(s).
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Voice and audio |
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General purpose signals |
Recommendation-specific signals |
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ITU-T P-series: Telephone transmission quality, telephone installations, local line networks |
ITU-T G-series: Audio and voice coders
ITU-T V-series: Data communication over the telephone network |
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Still Image |
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General purpose signals |
Recommendation-specific signals |
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ITU-T T-series: Terminals for telematic services |
ITU-T T-series: Terminals for telematic services |
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Video |
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General purpose signals |
Recommendation-specific signals |
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ITU-T H-series: Audiovisual and multimedia systems |
ITU-T H-series: Audiovisual and multimedia systems ITU-T J-series: Networks and transmission of television, sound programme and other multimedia signals |
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Other |
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General purpose |
Recommendation-specific |
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ITU-T G-series: Multimedia Quality of Service and performance - Generic and user-related aspects |
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