Orban OPTIMOD 6200, Руководство по эксплуатации

Страница: 92 / 195

3-12
OPERATION ORBAN Model 6200
TV 2B-GP NO LC (TV Two-Band General Purpose; no Loudness Controller): is identi-
cal to
TV 2B-GEN PURPOSE except that the Loudness Controller is defeated.
TV 2B-FINE ARTS (TV Two-Band Fine Arts) is identical to TV 2B-GP NO LC except
that it rides gain more slowly than the general-purpose presets. The Loudness Controller
was turned off to prevent its compromising the dynamic impact of music. If you need the
Loudness Controller function, you can create a User Preset identical to
TV 2B-FINE
ARTS
but with the Loudness Controller activated.
TV LIVE NEWS (Two-Band Live News) rides gain more quickly than the general-
purpose presets. Its gate threshold is lower, so it will bring up low level input material
more quickly. It is designed for live news programs where input levels may be quite un-
predictable. Being a Two-Band algorithm with loudness control, it controls loudness
well but does not automatically re-equalize substandard audio (which is quite common in
live news broadcasts). You may therefore prefer the Five-Band Live News preset.
TV LIVE SPORTS (Two-Band Live Sports): is similar to TV LIVE NEWS except the
release time is slower to resist pumping up crowd noise and the threshold of the single-
ended noise reduction system is higher.
TV 5B-GEN PUR W/NR (TV Five-Band General Purpose with Noise Reduction): pro-
vides effective dynamic range control and “automatic re-equalization” of most dramatic
material. It applies single-ended noise reduction to the material, which will reduce un-
wanted noise like hiss, hum, or stage rumble. However, it will also reduce ambience. If
the program material is carefully produced (as are most contemporary feature-film
soundtracks), you may wish to use
TV 5B-GEN PURPOSE
(which does not apply noise
reduction), or, if the material is so well produced that it would not benefit from “auto-
matic re-equalization,” use
TV 2B-GP NO LC
.
TV 5B-GEN PURPOSE (TV Five-Band General Purpose without Noise Reduction): is
identical to TV 5B-GEN PUR W/NR except that the single-ended dynamic noise reduc-
tion system is off.
TV 5B-NEWS (TV Five-Band News): rides gain more quickly than the general-purpose
presets. Its AGC release time is faster so it will bring up low level material more
quickly. It is designed for live news programs where input levels may be quite unpre-
dictable. It also automatically re-equalizes substandard audio (which is quite common in
live news broadcasts).
TV 5B-SPORTS (TV Five-Band Sports): is similar to
TV 5B-NEWS, except the AGC
release time is slower to
resist pumping up crowd noise.
TV 5B-OPTICAL FILM (TV Five-Band Optical Film): is designed to make the best of
the low-quality audio provided with optical film sound tracks (particularly 16mm). The
gate threshold is quite high to avoid pumping up hiss, thumps, and other optical artifacts.
The threshold of the single-ended dynamic noise reduction system is also high so that
this system can reduce artifacts as far as possible. Release times are slow, because we
assumed that material encoded on optical film has already been carefully level-