Telestream PRISM MPI2-10, User Manual

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Application Information
Audio Application
PRISM MPI2-10-MPX2-10 User Manual
176
5.
Use the surround display to monitor relative loudness of the individual elements
rendered in a surround-sound listening environment. Check the surround sound
display for performance parameters and indicators.
Note:
The Audio Surround Sound display is provided under license from RTW GmbH
& Co. KG.
– Level Indicators: indicate the audio level balance among the left (L), right (R), left-
surround (Ls), and right-surround (Rs) channels as cyan lines on the Loudness
Grid.
– Loudness Grid: the ruled scale, radiating from the center, on which the level
indicators register their audio level and balance. The scale has tic marks at 10 dB
intervals. An additional tic mark indicates the –18 dB level. The –18 dB and –20
dB levels are typically used for aligning audio levels.
– Total Volume Indicator: the cyan polygon formed by connecting the level
indicator end points, showing the total sound volume of the L, R, Ls, and Rs
channels. Each connecting line bends away from the center if the two signals
have a positive correlation, bends toward the center if the signals have a
negative correlation, and do not bend if the signals are uncorrelated.
– Center Volume indicator: displays the sound volume of the center channel as a
vertical yellow bar between the L and R channels, and connects the ends of the L,
C, and R audio level indicators with straight lines.
– Channel-Pair Phantom Sound Indicators (PSIs): located on each side of the
Surround Sound display, indicates the location of potential phantom sound
sources formed by adjacent channels. The white tic marks on these moving bar
indicators show the phantom source locations. The bar length indicates the
correlation between the adjacent channels. A short-to-medium length green bar