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0078B - Audio Silence
published
0078B v2.0
Item image
SILENCE
Audio Level Below Threshold
Detect Silence
Silence Threshold, Duration
Channel, Level
https://qc.ebu.io/items/0078B/versions/2-0-0/
Check
Report
Summary
EBU QC Id
0078B
Name
Audio Silence
Status
published
Category
objective
Lead editor
Malateshgouda Karegoudar
Aliases
mute minimum level no audio
Tags
audio
Versions
Version Status Edition date Saved by Note
Details
Definition
Used in Checks, the system shall verify if the audio level on any audio channel is lower than the user defined Silence Threshold Level for intervals longer than a user specified Minimum Silence Duration. Optionally the system may report the segments where the Audio Level is lower than the Silence Threshold Level provided as input.

Used in Reports, the system reports the segments where the Audio Level is lower than the Silence Threshold Level provided as input.
References

  • [https://tech.ebu.ch/publications/r123 EBU R 123]

    Remark: Track Allocation for International File Exchange

Examples

  • Input: "Silence Threshold Level" = -40.0 dBFS
    Input: "Minimum Silence Duration" = 100 ms
    Output: "Check Result" = false
    Output: "Silence Segment" from 00:39:00:00 to 0:39:04:00 :
    --> "Channel" = 4a 1
    --> "Average Audio Level" = -50.0 dBFS
    Output: "Silence Segment" from 00:51:00:00 to 00:51:02:00 :
    --> "Channel" = 4a 2
    --> "Average Audio Level" = -50.0 dBFS

    Remark: Used as a Check. CheckResult = false means that at least one segment equal to or longer than Minimum Silence Duration and with an Audio Level lower than the Silence Threshold Level was found.

  • Input: "Silence Threshold Level" = -45.0 dBFS
    Input: "Minimum Silence Duration" = 120 ms
    Output: "Silence Segment" from 00:37:00:00 to 0:37:02:00 :
    --> "Channel" = 4a 1
    --> "Average Audio Level" = -52.0 dBFS
    Output: "Silence Segment" from 00:37:00:00 to 00:37:02:00 :
    --> "Channel" = 4a 2
    --> "Average Audio Level" = -48.0 dBFS

    Remark: Used as a Report. The system reports the segments where the Audio Level is equal to or lower than the Silence Threshold Level provided as input.

Input parameters
Name Default value Description Data model name Unit Locator
Output parameters
Name Alias Description Data model name Unit Locator
Test material
Title Version Download
Remarks
Remarks
This Test works for each audio channel independently, i.e. it does not consider weighted and aggregated measures for audio services.
User discussions
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