Junger Audio T*AP Television Audio Processor Edition - Manual (Page 40)

T*AP
36
setup GUI – AUDIO PROCESSOR – Upmix & 2ch Fail Over (5.1+2 program configuration)
With firmware version 3.5 Jünger Audio
introduced a new 5.1 upmix algorithm for
upmixing stereo or even mono sources to
multichannel surround sound while remaining
acoustically downmix compatible. This is a
real-time process which does a frequency
analysis of the input signal. As known from
the mathematical theory, the longer the time
for such an analysis the better the result. But
this will introduce more delay for the audio
path, compared to the video. This delay, if
acceptable in general, may be compensated
by the video delay of the SDI embedder.
Please note that presets created with earlier
firmware version are not compatible with the
new upmix algorithm!
You may take the upmix source signal from
either the surround Left/Right input (in case it
provides stereo PCM instead of surround
L/R) or from pre-selectable inputs (2L/2R or
AUX).
The Surround Detect circuit monitors the
input channels to decide if the surround
signal has disappeared in order to do an
automatic upmix if desired. But the upmix
may also be forced by an event of the system
that loads a preset configuration.
Downmix
Out Gain (dB) output gain of the downmix signal
[-20.0 … 20.0]
Center Mix [0.0 … -12.0]
level (dB)
Surround Mix [0.0 … -12.0]
Level (dB)
Fail Over Upmix
switch that provides the upmix block with an input signal for upmix or
pass through if the source is not intended do be used for upmixing.
Mode the switch may be permanently [FIX]
connected with either the 1L/1R, 2L/2R or
AUX input but it may also perform an [AUTO]
switch over from 1L/1R to AUX or 1L/1R to
2L/2R if the first signal fails.
Both options may also be set to turn the
upmix off [no Upmix] if the switch over takes
place.
Fail Threshold (dBFS) [-60 … -40]
Fail Wait (s) [1.5 … 10.0]
Fail Return (s) [0.0 … 10.0]