HTP-1 Installation and User Guide Release 1.8.1
Neural-X can be applied to any signal having 8 or less channels. There is no
point in applying it to signals that have more channels.
The Sound Enhancement setup page allows you to enable “wide synth." When
this is enabled the 12 channel/ 7.1.4 output of the DTS system is used to
“synthesize” wide and “top middle” channels in a 9.1.6 mode. This is described
in more detail below.
Auro-Matic
Auro Technology’s proprietary “Auro-Matic®” algorithm is applied to the input
signal. Auro-Matic uses various cues in the signal to route sound to the speaker
set according to rules known only to Auro Tech. An obvious rule is that
material common to the left and right channels is extracted and routed to the
center channel. The Sound Enhancement setup page allows you to set three
different parameters affecting Auro-Matic. The “size” sets a sort of reverb
time. The “strength” determines how much of the AuroMatic signal is mixed
into the original signal. The defaults are medium and 13 (0dB).
The “auro listening mode” is set automatically by your speaker layout.
Note that Auro-Matic upmix is not applied to 192kHz content. This is expected
behavior.
When upper speakers are present, the Auro-Matic effect is known as “Auro
3D” When no upper speakers are present, the Auro-Matic effect is configured
a “Auro 2D”.
Native
When "native" mode is selected, HTP-1 uses the upmixer native to the decode
format. The actual upmixer depends on the input signal. Dolby signals will be
processed with Dolby Surround. DTS signals will be processed with Neural-X.
Auro-3D encoded signals will be decoded. PCM, Atmos and DTS-X signals will
be passed through.
All channel mono
The input signal is mixed down to mono and the same mono mix is applied to
all speakers.
All channel stereo
The input signal is mixed down to stereo and the same left and right channels
are applied to all of the speakers on the left and right, respectively. A mono
mix is routed to the center channel.
Wide Synth
While Dolby Atmos material can include objects that are located in the “wide” channels, most signals
will not include wide content. The Dolby Surround upmixer does not produce wide channels. The DTS-X
decoder and the Neural-X upmixer produce only 12 channels. While you can configure a system to 9.1.2
so that the DTS tools produce wide signals, it’s more common to configure DTS for 7.1.4 without wides.
The Auro3D system does not produce wide signals.
The “wide synth” button is located at the bottom of the screen as it can apply to any of the surround
modes. When wide synth is enabled, the wide speakers will be fed a mix of the front and side signals,
as well as any wide content that might already be present.
HTP-1 User Manual
Page 71
V1.8.1
