Error Code:
Mono Audio
Description:
"Mono Audio" refers to the duplication of an audio track, effectively eliminating any stereo or surround panning.
Impact:
Mono audio impacts both the Technical and Content Quality of an asset. If mono audio is not creatively intended, the missing panning effect provides the member with an incomplete/inaccurate experience. Any subsequent assets derived from this mix will also be incorrectly mono.
Severity Structure:
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FYI |
Mono audio can clearly be discerned as creative (i.e. accompanies archival footage where mono audio would be expected or all that is available). |
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Issue |
2.0 tracks are identical or 5.1 does not contain any surround panning between channels. Mono is also visually represented on a phase scope, where the audio signal exhibits zero phasing or panning between the left or right channels. |
How to Prevent:
Label tracks correctly in metadata.
Be sure to properly fold down the 5.1 to derive the 2.0 (do not simply duplicate tracks).
Solution:
Replace mix with a fold down of the 5.1 to preserving the panning effects and redeliver. Check the M&E for the same issue, and redeliver M&E as well if necessary.