Miranda UAP-1783 Operations Instructions download pdf (Page 23)

GUIDE TO INSTALLATION AND OPERATION

UAP-1783 | 19

3.3.4.2 UP/DOWN-MIX – UP-MIX tab:

This feature is used to create, from a stereo source, a

multi-channel compatible audio signal with up to six

channels: Left, Right, Center, Left Surround, Right

Surround and the Low Frequency Effect.

The selection of the stereo source is done with the

two pull down boxes Left Source and Right Source.

The Type pull down box offers three different

standard mixes and a custom position. The proposed

standard mixes are named Speech, Music and

Movie. For each standard, an Effect slider allows the

Effect to be kept very light, with the slider down to 0,

or emphasized as the value increases toward 10.

The Custom position leaves all the settings available

to the user for specific needs.

3.3.4.3 UP/DOWN-MIX – DOWN-MIX tab:

This tab provides resources to control the downmix of

a “5.1 channel” surround-sound audio signal into an

LtRt or LoRo stereo pair. The 5.1 terminology refers

to six discrete audio channels, with the low-frequency

channel of limited bandwidth designated as the .1

channel.

The default source channels are CH9 to CH14, an

input Shuffler allows any combination of the input

channels. The Down-mix stereo pair is mapped into

audio channels 15 and 16.

The mixing configuration is defined with pull down

boxes.

Mode:

• OFF disables the audio down-mix. The audio

channels 15 and 16 pass through

unchanged.

• LtRt: enables the down-mix of 5.1 channels

into an LtRt matrix surround encoded

stereo pair. The input signals on

channels 15 and 16 are discarded.

• LoRo: enables the down-mix of 5.1 channels

into an LoRo stereo pair, which is a

conventional stereo signal. The input

signals on channels 15 and 16 are

discarded.

Type:

• Auto the down-mix levels are taken from the

Dolby metadata attached to the selected

discrete channels. If no Dolby metadata

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Miranda UAP-1783 Operations Instructions Page 23

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