Dolby Laboratories 430 - Manual (Page 3)

DOLBY
430
DOLBY
430
D
OLBY
430 B
ACKGROUND
N
OISE
S
UPRESSOR
BACKGROUND NOISE SUPPRESSOR BACKGROUND NOISE SUPPRESSOR
T he Dolby 430 Series is a background
noise suppressor system for reducing the
broadband noises such as wind or traffic rum-
ble that often mar location recordings. Many
mixers in film and television postproduction
already rely on Dolby Laboratories’
Cat. No. 43, a background noise suppression
unit based on a modified version of Dolby
A-type noise reduction. The 430 Series takes
this concept further by using a modified ver-
sion of Dolby SR’s patented combination of
fixed and sliding bands to give more stable
signal handling and a significantly reduced
chance of audible side effects.
While superior in performance to the
Cat. No. 43, the 430 Series uses fewer con-
trols. Low- and high-frequency faders adjust
the amount of noise suppression above and
below dominant mid-frequency signals such
as dialogue. A pull-to-engage control permits
varying the preset operating level for record-
ings at unusually high or low levels (overall
gain of the unit remains fixed).
The 430 Series is a modular system pro-
viding from one to six channels of background
noise suppression. A single control unit pro-
vides power and control signals for up to three
single-rackspace frames, each with one or two
channels of processing. All operating controls
are mounted in a remote control module
which may be located up to 15 meters (50
feet) from the control unit. These remote con-
trols have been specifically designed for easy
console mounting. Alternatively, a housing is
available to allow for standalone operation.
100 Potrero Avenue
San Francisco, CA 94103-4813
Telephone 415-558-0200
Fax 415-863-1373
[email protected]
Wootton Bassett
Wiltshire SN4 8QJ, England
Telephone (44) 1793-842100
Fax (44) 1793-842101
[email protected]
www.dolby.com
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