0077B - Average Minimum Audio Level
v1.0
published
0077B
v1.0
AVERAGE MIN AUDIO LEVEL
Average Level Below Threshold
Detect Analogue Channels
Noise Floor, # of Channels
Channel ID(s), Average Level
https://qc.ebu.io/items/0077B/versions/1-0-0/
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Summary
- EBU QC Id
- 0077B
- Name
- Average Minimum Audio Level
- Status
- published
- Category
- objective
- Lead editor
- Roman Meszmer
- Aliases
- audio level threshold low level audio low audio quiet sound low
- Tags
- audio
Versions
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Details
- Definition
- System shall check each channel in an audio service and report any channels which have an average level below the user-specified level.
System may optionally report a larger than expected variation between channels in an audio service. - References
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- Examples
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Service 1 Channel 3 reports Average Level of -30dB (Threshold -24dB).
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Service 1 Channel 1 and 2 Average Level Mismatch
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Input parameters
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Output parameters
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Test material
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Remarks
- Remarks
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Per-channel information of signals, which have a level between digital zero and a pre-defined upper noise floor level.
In large scale archive migration projects, it would be possible to find the threshold level.
Automation of the threshold level may be possible, but not easy. That would constitute a new subjective test.
User discussions
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