0057B - Audio Clicks
v1.0
published
0057B
v1.0
AUDIO CLICKS
Audio Clicks
Usually Equipment Issues
Duration Threshold, Sensitivity
Relevance, Severity
https://qc.ebu.io/items/0057B/versions/1-0-0/
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Summary
- EBU QC Id
- 0057B
- Name
- Audio Clicks
- Status
- published
- Category
- subjective
- Lead editor
- Joerg Houpert
- Aliases
- analogue and digital clicks audio pops audio glitches audio crackles audio spikes disc scratches impulse noise
- Tags
- audio
Versions
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Details
- Definition
- System shall discover audio clicks by analyzing the baseband signal.
- References
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- Examples
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Audio Click(s) above threshold found at sample position timecode 10:00:10:00.
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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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This is relevant for archive ingest, where analogue legacy problems should be detected. False detections may occure as clicks and crackles are also used for creative sound design.
Audio clicks are short duration audio artefacts caused in digital systems by hardware/software problems such as buffer under-run/overflow or synchronisation issues. When present inside an audio file they are usually generated because of a defective or critical recording chain.
In the time domain a click is typically visible as a discontinuity (a rapid and abnormal variation) on the waveform, in the frequency domain this results in spikes at high frequency in the affected time interval.
User discussions
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