The Acoustic Noise Generator is
designed to defeat wired microphones inside walls, contact microphones, audio
transmitters located in AC outlets, and laser/microwave reflections from
windows.
Most sound masking systems inject noise in to an otherwise benign environment.
In this environment, the occupants must raise their voices above the noise
level to communicate, which invariably, eliminates the benefit of noise
masking.
The masking system injects noise into the environment perimeter and not
directly into the environment. This approach allows normal conversation while
defeating eavesdropping devices that rely on acoustic leakage.
A complete noise masking system would consist of the main unit and three optional accessories that are purchased to tailor
the system to the environment of concern. The accessories are:
• TRN-2000 Transducer (one included FREE) used
to inject acoustic noise into walls, finished ceilings, windows, plumbing,
and air ducts.
• OMS-2000 Omnidirectional Speaker used to project acoustic noise into drop
ceiling air spaces, closets, crawl spaces, and air ducts.
• EAR-200 Electro-Acoustic Receiver used to evaluate the level of audio
leakage and set the specific masking level.
A typical installation example to provide complete perimeter protection
would include a single main unit, 11 TRN-2000 transducers, and 2 OMS-2000
speaker units.
Specifications
• Size: 1-3/4 x 6 x 10 in (4.4 x 15.2 x 25.4 cm)
• Weight: 3.0 lbs (1.4 kg)
• Channels: Two
• Output voltage: 1-12 Vp-p @ 8 W (1-1/2 W min)
• Frequency range: 250 Hz - 5 kHz (±3dB)
• Power: 115-125 or 230-250 VAC 50-60 Hz 24 watts max
