DOLBY 430
BACKGROUND NOISE SUPPRESSOR
DOLBY 430 BACKGROUND NOISE SUPRESSOR
The 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 info@dolby.com
Wootton Bassett
Wiltshire SN4 8QJ, England Telephone (44) 1793-842100 Fax (44) 1793-842101 info@dolby.co.uk
