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| IEVref: | 872-02-15 |  | ID: |
| Language: | en |  | Status: Standard |
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| Term: | supplementary audio service
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| Definition: | additional audio soundtrack that provides additional features or function over and above that provided by the main audio stream
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| Publication date: | 2022-09 |
| Source | IEC 63080:2017, 3.40, modified – The term has been revised to be singular to align with the definition. |
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