Selecting and Monitoring Audio
Surround Display Elements
The Level Indicators-indicates 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.
The 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 will bend away from the center if the two signals have
a positive correlation, will bend towards the center if the signals have a negative correlation, and will not bend if the
signals are uncorrelated.
The 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, indicate 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 indicates positive correlation between the channels, forming a localized phantom
sound source located at the white tic mark. The bar grows to full length and changes color to yellow as the correlation
moves to zero, indicating a wide, non-localized sound image. The bar changes color to red for adjacent channels with
significant negative correlation. For negative correlations, the ends of the PSI for the L and R channels will continue to
grow at a 45° angle while the other PSIs remain at full length.
Center-Pairs Phantom Sound Indicator-a fifth PSI at the top of the display shows potential phantom sources formed by
the LC channel pair and the CR channel pair. If the L, R, and C channels all have the same signal level, the white tic
mark on the bar will appear directly above the C level indicator. The white tic mark will move right or left depending on the
relative balance between the three channels. A short bar to the left of the white tic mark indicates a positive correlation
between L and C. The bar will grow as the correlation decreases. Like the L-R PSI, the bar will continue to grow at a 45°
angle for negative signal correlations. The bar to the right of the white tic mark behaves in the same way, depending on
the C-R correlation. This PSI indicator uses the same color coding as the other PSI indicators.
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Quick Start User Manual
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