GENERAL DESCRIPTION

The SSM2000 is an advanced audio noise reduction system based on proprietary HUSH® circuitry. HUSH combines a dynamic filter and downward expander to provide a high level of effectiveness without the sonic artifacts normally associated with noise reduction systems. In addition, an Adaptive Threshold circuit detects nominal signal levels and dynamically adjusts both thresholds, thereby providing optimal results regardless of program source. Since it is a single-ended system, HUSH can be used on virtually any audio source, including audio and video tapes, radio and television broadcasts, or any other source with objectionable noise.

FEATURES

Up to 25 dB of Noise Reduction from Virtually Any Audio Source without Sonic Artifacts

“Single-Ended” Operation Eliminates Need for Encode Decode Process

Adaptive Threshold Dynamically Adjusts to Changing Nominal Signal Levels

Effectively Decodes Dolby B® Encoded Sources

Direct VCA Control Port Access for Additional Level Control Functionality

Logic-Controllable Bypass and Muting

100 dB Dynamic Range (Noise Reduction OFF)

0.02 Typical THD+N (@ 1 kHz, Noise Reduction OFF)

+7 V to +18 V Operation

No Royalty Requirements

APPLICATIONS

Auto Radio Sound Processing

Multimedia PC Sound Cards

Television Sound Processing

Cassette Tape Players

AM/FM Receivers

Telephone & Wireless Links

Professional Audio