OmniTek OTR 1001, User Manual

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OmniTek OTR 1001 User Guide, v3.1a K-19
Loudness and the Surround Sound View
Two features of the Surround Sound View described in Section K.3 are concerned with loudness.
The first is the bar graph shown to the right of the main Surround Sound display, the other is the
blue outline shown over the individual channel PPMs.
Figure K-13: Surround Sound View
The configuration of the loudness elements of this display is exactly as described above for the
Loudness View.
Loudness Bar Graph
The bar graph to the right of the PPM display is similar to the bar graphs shown in the Loudness
View (described above) but rather than showing the Momentary, Short-term and Integrated
Loudness values for a pair of channels, it shows ‘Program’ values of these measures (calculated
using the BS-1770 weighting algorithm).
Loudness Outline
The Momentary Loudness values determined for the L, R, C, Ls and Rs channels are also
indicated on the corresponding PPM (using the same scale) and these points on the individual
PPMs joined to give a visual representation both of how the loudness is distributed between
these five channels and of how this is changing in time.
The ‘ball’ in the middle of this area marks the current position of the centre of sound.