Extron Electronics SSP 7.1 User Guide - Manual (Page 106)

Executive Mode — see Front Panel Security Lockout.
External Source (Test Signal) — An external calibration source, is usually used to test
specific decoding mode outputs. When the External Source option is chosen, the speakers
that receive the test signal can be specified.
Front Panel Security Lockout — When Front Panel Security Lockout is enabled, the front
panel is locked and the user is unable to make any changes from the front panel (except
disabling the lockout). It does not block changes made using SIS commands or the SSP 7.1
Setup and Control Software.
Listening Mode — The listening mode determines how the signals of the source format
are decoded and distributed to the system’s speakers. Not all listening modes are available
for every input mode and the SSP 7.1 offers factory defined listening modes that are
matched to the source format and speaker configuration. The user can override the
default listening mode to fully define a listening mode that suits the source format, the
speaker configuration, the room in which the system is installed, and the listener’s personal
preferences.
Low Frequency Effects (LFE) — This information is encoded in the source signal and is
intended to be played back by the subwoofer. Bass management mixes this information
with the low frequency signals from designated output channels and directs it to the
subwoofer (if present) and speakers that have been set to output the signal. (Also see
Bass
Management , Crossover Frequency , and Speaker Size .)
Mode Override — The user can customize the listening mode to the needs of the source
format, speaker configuration, and the venue in which the system is installed through the
use of the Listening Mode Override. This is a front panel control that can be further refined
by the SSP 7.1 Setup and Control Software.
Mute — It is possible to completely silence the output from all channels (universal mute) or
each channel individually.
Panorama Control — This feature extends the
Center Width Control , so that all or part
of the center image can be heard from the surround speakers for a “wraparound” effect.
The feature may be On or Off. The default setting is Off.
Pink Noise — Pink noise is a random signal with all audio frequencies present, that is
generated by the SSP 7.1. It provides equal energy per octave to provide a flat response over
all frequencies. The main purpose of pink noise is to calibrate a speaker’s interaction with its
environment.
Test Signal — Test signals are used during setup to calibrate each channel’s levels and to
ensure proper connection between the SSP 7.1’s individual output channels and the line
level input channels of an audio signal processor, a receiver with built in amplifier, or a stand
alone amplifier that powers the loudspeakers. There are three options for test source:
Pink
Noise , Dolby Noise , and External Source .
Simple Instruction Set (SIS) — The SSP 7.1 accepts SIS commands from a host device
such as a computer running the HyperTerminal utility or other control system. SIS commands
consist of a string (one or more characters per command field). The commands are used to
configure the SSP 7.1 unit and, depending on the command, usually produce a response
which can be seen on the screen of the host device.
Source Format — Audio signals are recorded and processed in different formats. The
recorded signals contain differing amounts of information, encoded in different ways, and
the format determines how accurately the sound that is played back reflects the original
sound as it was recorded.
SSP 7.1 • Glossary 100