D*AP8 MAP
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Setup GUI – MEASUREMENT
The MAP has an independent measurement block (see AUDIO PROCESSOR > Overview) that offers a
comprehensive loudness meter. The measurement data are available for external applications like the
Junger Audio Application Manager J*AM for bar graph level display or loudness over time plot or for
logging of such data.
In the top of the GUI you can read these metering data of a preselected source:
When you click on the little triangle over
here you will get a selection of the
measurement formats available:
This display also shows the duration
of the measurement. If the Speech Gate
is active for the Dialogue Intelligence™
algorithm, the numbers become yellowish
when the measurement has paused because there
is no speech detected for the moment.
The other two buttons will control the measurement:
|| <start> / <pause> / <continue>
x <reset>.
Setup GUI – MEASUREMENT – Setup
Dialog Level (Dialnorm) Measurement:
Beside the ability to measure loudness by above standards, the MAP offers the feature to measure the
long-term A-weighted average level of dialogue within a presentation. A Dolby Digital / Digital plus
consumer decoder (e.g. a Set Top Box) will normalize the output level to -31dBFS by applying a shift
based on the Dialog Level parameter setting. The rule is: -31 - (dialog level value) = shift applied.
Example (dialog level measured = -23dB): -31 - (-23) = -8dB shift applied.
Loudness Measurement
Measurement
Follows AUDIO PROCESSOR
Mode
> Setup > Loudness Mode
Dialogue Level (Dialnorm) Measurement
Dialnorm
[L / R / C / L+R / L+R+C]
Measurement
Channel Select
Dialnorm
[ITU-BS.1770-1 / Leq(A)]
Measurement
Algorithm
Dialog Intelligence™
[OFF / Active]
Speech Gate
The Dialog Intelligence™ algorithm developed by
Dolby® Inc. searches for portions of the audio content where
speech is present. Such portions may trigger the loudness
measurement. If it is activated and no speech is detected, the
number display becomes yellowish.