Glossary - Extron electronics SSP 7.1 User Manual

Index and Glossary, cont'd

Glossary

Bass Management — Low frequency sounds are usually better handled by the subwoofer speaker. Bass
Management organizes the low frequency component of designated input signals, along with the
Low Frequency Effects (LFE) information encoded in the source format and passes that information
to a subwoofer (if available). (Also see Crossover Frequency, Low Frequency Effects, and Speaker Size.)
Center Image Control — (DTS Neo:6 Music or Cinema)
left and right speakers without affecting the level of the center channel to create a better balance. There
are eleven possible settings, from 0 to 10. At setting 0, there is no attenuation of the right and left front
channels, so that the center channel spreads out. At setting 10, there is maximum attenuation (6 dB) of the
right and left front channels, which allows the center channel to dominate. The default setting for
Neo:6 Music is 3; the default
Center Width Control — Pro Logic decoding produces a single center signal that comes from the center
speaker. If there is no center speaker, a "phantom" center image is produced that is split between
the right and left speakers. If right, left, and center speakers are present, center width control allows
variable adjustment of the center image so that it is heard only from the center speaker, only from
the right and left speakers, or from all three speakers in varying degrees.
Compensation Delay — In a room where speakers are not equidistant from the listener, sound from the
closest speaker reaches the listener before sound from the farthest speaker. This adjustment delays
the signals going to individual speakers: the signal to the speaker farthest from the listener is not
delayed while speakers that are closer to listener, are. This ensures that the sound from each speaker
reaches the listener at the same time.
Crossover Frequency — The Crossover Frequency sets the boundary below which the low frequency
signals from designated output channels are incorporated into Bass Management. The Bass
Management signal is passed to the subwoofer (if present) and speakers that have been set to output
the signal. (Also see Bass Management, Low Frequency Effects, and Speaker Size.)
Dimension Control — This feature alters the ratio of L+R to L-R for two-channel input signals, which
adjusts the sound field towards the front or towards the back. The available settings are front,
neutral, or back. The default setting is neutral.
Dolby noise — Dolby noise provides a bandpass-filtered noise, centered at 750 Hz with a
12 dB/octave roll off. This signal is also generated by the SSP 7.1 and is used to set speakers to the
same level when calibrating the room.
Downmix — multiple channel signals are mixed to produce a stereo or mono output signal.
Dynamic Range Compression — This control adjusts the gain applied to Dolby Digital or DTS listening
modes to compress the signal outputs during the decoding process. The three possible settings are
none, minimum, and maximum. The default setting is None.
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 user is unable
to change the input selection or adjust the volume from the front panel. 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.
C-6 SSP 7.1 • Index and Glossary
This control attenuates the level of the front
DTS Neo:6 Cinema is 10
setting for .
DTS