7800/7700 MultiFrame Manual
7814 Series Dual HDTV Up/Down/Cross Converters
Revision 1.1.3 Page - 103
7.21.1.7. Sound Direction Detect Rate
The Sound Direction Detect Rate controls the detection rate of sound direction. The up-mixer constantly
calculates the sound image that would be perceived from the stereo audio input. If the sound direction
shifts in the sound image, the up-mixer changes the output sound direction accordingly by switching the
amount of sound going to different speakers. If faster detection rate is selected, the sound direction
switching may sound more dramatic, but may also be felt as unnatural. On the other hand, slower
detection rate would sound dull and uninteresting. To adjust the detection rate of the sound direction, drag
the slider to the right to increase the rate or drag it to the left to decrease the rate.
The value range is 0 to 7 in increments of 1. The default is level 4.
7.21.1.8. Soft Switch Duration
The Soft Switch Duration controls the transition time when the up-mix module switches modes from 5.1
bypass to up-mix and vice versa. The duration can range from 5 ms to 200 ms.
7.21.1.9. 5.1 Detection Threshold
The 5.1 Detection threshold control allow control of what level of audio is declared as silence. When
audio on channels C, LFE, Ls, and Rs are all below this value the audio on channels L and R will be up-
mixed.
7.21.1.10. Stereo or 5.1 Monitor
This monitors the incoming audio to determine if it is 2.0 or 5.1 and will provide this information.
7.21.1.11. Upmix Status Monitor
The up-mix status monitor gives a visual representation of what mode the UMX block is currently running
in.
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