monolith HTP-1, Инструкция по установке и эксплуатации

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HTP-1 Installation and User Guide Release 1.8.1
Audio Features
Some audio features are controlled from the
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Web GUI Home Page
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Night Mode
Action movies are notorious for wide dynamic range. At times the dialog is very quiet. At other times
explosions can rock the house. Night mode is designed to reduce the difference between loud and soft,
as one might wish to do if the children are sleeping. Night mode, also known as Dynamic Range Control,
uses features of the Dolby and DTS coding systems. This means it has little effect on PCM streams. The
subwoofer is also attenuated when night mode is engaged, regardless of the stream type.
Night mode is engaged or disengaged using one of the indicator buttons at the bottom of the
homepage. There are three modes:
Night Mode Auto This is the recommended operating mode. Dolby streams specify dynamic
range parameters and auto mode means they are followed. The subwoofer is
not attenuated.
Night Mode On The Dolby and DTS decoders are configured to enable their full dynamic range
compression. The subwoofer is attenuated.
Night Mode Off The Dolby and DTS decoders are configured to disable all of their dynamic
range compression features giving the most contrast between loud and soft
sounds. The subwoofer is not attenuated.
Dialog Enhancement
Some users enjoy movies more if they can hear the dialog better. The DTS-X coding system includes a
means to control the dialog explicitly. The DTS Dialog indicator is displayed when this feature is
available. When the content does not have DTS Dialog control the dialog enhancement feature uses a
simpler method. It simply adjusts the center speaker volume, as most dialog comes from the center
speaker. You can adjust the dialog between 0dB (as authored) and +6dB. Some users might wish to
boost the center channel further using the user trim on the calibration page.
Loudness
Human hearing is non-linear. When the volume is turned down, listeners report that the bass goes away
before the midrange. This phenomenon was first described by Fletcher and Munson in the 1930’s. The
“equal loudness” curves have been repeatedly measured with greater sophistication and are
standardized as ISO 226:2003. Wikipedia has a good article on the equal loudness contours. Older audio
receivers often included a “loudness” button that simply boosted the bass. The HTP-1 uses a six pole
filter designed to match the equal loudness contours as published in ISO 226:2003.
HTP-1 User Manual Page 73 V1.8.1