Sound and noise control
  Your One-Stop Resource for Soundproofing and Noise Control Solutions
Applications What’s Your Problem? Acoustics 101 Soundproofing Tips Literature Photos News
Who We Are International Sales Contact Us Links Site Map Blog Home
dBA Panels


Stay Connected


National Save Energy Coalition

Specifications subject to change with out notice.

© Acoustical Surfaces, Inc. – All Rights Reserved.
Smart Sound Masking System
SMS-AMP Front Shown

Smart SMS-AMP-8 Back
SMS-AMP-8 Back Shown


The Intelligent Sound Masking System

Smart SMS is designed to provide the best masking sound while preserving the comfort of the occupants. The precise adjustment of the masking sound to the specific characteristics and noise conditions of each work area is what distinguishes this system.

Sound Masking System Amplifier

The SmartSMS-AMP is a DSP-based system that provides unique adjustment functions and ensures the generation of the optimum masking sound regardless of the characteristics of the room.

Automatic Equalization Process

Adjusts automatically the masking spectrum for the specific architectural characteristics of the building. The adjustment is quick and precise.

Active Adjustment of the Masking Sound Level

Continuously measures the ambient noise and automatically adjusts the masking sound level accordingly. It maximizes the privacy in the treated space while preserving the occupants’ comfort.

The SMS-AMP is available in 1, 2, 4 or 8 channel versions and integrates the controller, the noise generators, the equalizers and the 25-Volt amplifiers. It combines sound masking, music diffusion and paging systems, all integrated in one convenient rackmount package.

Product Features

  • Fully adjustable output channels, e.g. 1/3 octave equalizers (±0,1 dB Adjustment)
  • Auxilliary inputs for music or paging, 1/3 octave band equalizer on each output
  • Up to 8 SMS-AMP units can be networked through a USB if more than 8 channels are needed
  • Inputs for active sound level sensors
  • Programmable phase-in timer (up to 2 months)
  • Volume control knob allows easy volume adjustments
  • The DSP processor is controlled from a PC connected through a USB port
  • Includes a UL and FCC certified 110-240VAC – 25 VDC external power supply
  • Optional internal clock for calendar function allows time-based automatic adjustments

Automatic Equalization Process Features

  • Integrated 1/3 octave frequency analyzer, real-time measurement of the masking spectrum during the calibration
  • Optional wireless connection between the computer and the SmartSMS allows to easily perform the equalization alone
  • Automatic calculation of the masking sound ensure generation of the target masking sound in the room
  • Different target masking sound spectrums can be applied to different zones
  • A bank of target spectrums is availalbe, spectrum editor function allows to create custom spectrums
  • Equalization can be performed manually, if desired, with a 1/3 Octave band equalizer

Active Adjustment Features

  • Unique active adjustment system which controls the masking volume based on the level of disturbing noise of the room
  • The disturbing noise is measured by sound level sensors installed in the ceiling – up to 8 sensors per zone
  • The masking sound level is adjusted automatically in real-time
  • Rate of adjustment, high limit and low limit are programmable separately on each output
  • Input mixer allows the combination of any active input with any output channel
The SMS-AMP Sound Masking System only requires to be connected to 25-Volt speakers to generate masking sound. All the sound generators, equalizers, mixers and amplifiers are included in one simple rackmount unit.

Internal active system preamplifier allows to connect up to 4 active sensors directly to the SMS unit inputs.
Smart SMS System Setup
Smart Sound Masking System Specifications
Model Channels Auxilliary Inputs Active Inputs Power per Channel Maximum Speakers per Channel Maximum Speakers per Unit
Paging No Paging Paging No Paging
SMS-AMP-1 1 1 1 20 W 10 20 10 20
SMS-AMP-2 2 2 2 80 W 32 64 64 128
SMS-AMP-4 4 2 4 80 W 32 64 120 240
SMS-AMP-8 8 4 8 80 W 32 64 120 240
  • AC Input: 100-240 V, 50-60 Hz
  • Power Consumption: Maximum: 7.5 A; Typical: < 1 A
  • Frequency Response: 100-10,000Hz
  • Distorsion: less than 1%
  • Auxilliary inputs impedance: 80 kOhms
  • Auxilliary inputs maximum voltage: ±10 V
  • Active inputs impedance: 80 kOhms
  • Active inputs maximum voltage: ±2 V
Smart SMS Test Data
Smart Sound Masking System Dimensions and Weight
Model SMS Size
(W × H × D)
Shipping Size
(W × H × D)
SMS Weight Shipping Weight
SMS-AMP-1 17″ × 3-7/8″ × 10-3/4″ 22″ × 9″ × 15″ 11 lbs 17 lbs
SMS-AMP-2 17″ × 3-7/8″ × 10-3/4″ 22″ × 9″ × 15″ 14.3 lbs 20 lbs
SMS-AMP-4 17″ × 3-7/8″ × 10-3/4″ 22″ × 9″ × 15″ 18.3 lbs 24 lbs
SMS-AMP-8 17″ × 3-7/8″ × 16-1/8″ 22″ × 9″ × 19″ 31.9 lbs 37 lbs


  1. Smart Sound Masking System Product Specification Sheet
Click Get Adobe Reader to download a free copy of Adobe Acrobat Reader.

• Soundproofing Products • Sonex™ Ceiling & Wall Panels • Sound Control Curtains • Equipment Enclosures • Acoustical Baffles & Banners • Solid Wood & Veneer Acoustical Ceiling & Wall Systems • Professional Audio Acoustics • Vibration & Damping Control Fire Retardant Acoustics • Hearing Protection • Moisture & Impact Resistant Products • Floor Impact Noise Reduction • Sound Absorbers • Noise Barriers • Fabric Wrapped Wall Panels • Acoustical Foam (Egg Crate) Acoustical Sealants & Adhesives • Outdoor Noise Control • Assistive Listening Devices • OSHA, FDA, ADA Compliance • On-Site Acoustical Analysis • Acoustical Design & Consulting • Large Inventory • Fast Shipment • No Project too Large or Small • Major Credit Cards Accepted

sound absorption noise blocking fabric wrapped panels soundproof foam
noise barriers acoustical panels soundproofing drywall