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0003F - Audio Bit Depth
published
0003F v3.0
Item image
AUDIO BIT DEPTH
Number of Bits/Sample
Common Values: 16, 24, 32
Expected Audio Bit Depth
Bit Depth Value, Mismatch
https://qc.ebu.io/items/0003F/versions/3-0-0/
Check
Report
Summary
EBU QC Id
0003F
Name
Audio Bit Depth
Status
published
Category
absolute
Lead editor
Eric Carson
Aliases
sample depth bits per sample bit resolution audio sample size
Tags
audio
Versions
Version Status Edition date Saved by Note
Details
Definition
Used in Checks, the system shall verify if the Audio Bit Depth at the bitstream level (e.g. AES or BWF) match with the expected value provided in the input.

Used in Reports, the system shall report the Audio Bit Depth detected in the bitstream.
References

  • ISO/IEC 11172-3

    Remark: MPEG-1 Audio

  • ISO/IEC 13818-2

    Remark: MPEG-2 Audio

  • ISO/IEC 13818-7

    Remark: MPEG-2 Part 3 AAC Audio

  • ISO/IEC 14496-3

    Remark: MPEG-4 Part 3 HE-AAC Audio

  • ATSC A/52

    Remark: AC-3/E-AC3 Audio

Examples

  • Input: "Audio Bit Depth Expected"= 24 bits
    Output: "Check Result"=false
    Output: "Audio Bit Depth" = 16 bits

    Remark: Used as a Check. CheckResult is false (test failed) because the detected Audio Bit Depth does not match the expected one.

  • Input: None
    Output: "Audio Bit Depth" = 16 bits

    Remark: Used as a Report. The System simply reports the detected Audio Bit Depth in the bitstream.

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
Typical values are 16, 20, 24 and 32 bit.

If Dolby audio is present in the container, this check should also confirm the Dolby quantisation parameter is valid.
User discussions
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