Glossary - Extron electronics SSP 7.1 User Manual

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 (LFE), and Speaker Size.)
Center Image Control — (DTS Neo:6 Music or Cinema) This control attenuates the level of the
front left and right speakers without affecting the level of the center channel to create a better
balance. There are eleven possible settings, from to . At setting , there is no attenuation of
0 10 0
the right and left front channels, so that the center channel spreads out. At setting , there is
10
maximum attenuation (6 dB) of the right and left front channels, which allows the center channel
to dominate. The default setting for DTS Neo:6 Music is ; the default setting for DTS Neo:6
3
Cinema is .
10
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 (LFE), 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 , , and . The default setting is .
None Minimum Maximum None
Equalization — The level of different frequency bands can be adjusted to enhance tone,
compensate for differences in individual speaker output and to remove extraneous noise,
feedback, and resonance.
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.
SSP 7.1 • Glossary 86