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Active Noise Control

Active Noise Control

Applied Areas

Introducing applications of active noise control technology.

ANC Applied Product Group

ANC Applied Product Group

      • Home Appliances / Kitchen Appliances
      • Product noise reduction and product satisfaction increase for refrigerator, washing machine, microwave, air conditioner, kitchen hood, air purifier, and vacuum cleaner
      • IT
      • Noise canceling function of earphone, headphone, portable electronic device
      • Transportation
      • Provides a pleasant ride in the transportation fields of automobiles, railways and airplanes
      • Industry / Construction
      • Improving the working environment for production / manufacturing facilities, construction (soundproof walls, etc.), and production sites
Silentium Products
Industry / Construction
IT
Transportation
  • ARA

    Optimized IT solution with perfect noise shielding and efficient cooling efficiency

    We guarantee a quiet and pleasant environment when building servers in offices, laboratories, assembly lines, etc.

    • Standard Specification : EIA-310 D/IEC-60297/DIN 41494
    • Noise specification : ISO 7779(Measurement of airborne noise emitted by information technology equipment)
    • ISO 3744(Sound power level measurement method of sound source by sound type, sound pressure method)
    • Degree of protection : IP 54
    • Warranty : 1 year
    • Intellectual property : Registered Utility Model : 20-0442879
    Feature

    Low Noise

    • Combination of low noise material and noise cancellation technique to achieve optimum effect in reducing low frequency noise
    • Audible spectrum Noise reduction effect through spatial noise reduction function of entire frequency

    Utility

    • Provides the best solution to solve the continuous noise war of IT equipment
    • ANC technology is also applicable to other fields

ASFT Characteristic

  • Air flow diagram
  • When ASFT is operated inside the rack, 8kW of hot air is discharged when the temperature difference of Inlet is kept below 20 degrees, which provides excellent cooling efficiency without any separate air flow control.
  • Inlet temperatures need to be maintained at 25 ° C in a working environment
  • Inlet temperatures in the server room need to be maintained at a maximum of 20 ° C
  • When the temperature difference between the Inlet and Outlet of the Rack is kept below 20 degrees, it discharges 8KW of hot air
  • No air flow control required
Noise measurement result

Noise measurements results (3 inter IMF blade and HP c300 blade server Installation)

back door status front door status ASFT Mode SwL (dBA) remarks
Open Open Off 84.1 current (installed) server noise
Close Open Off 82.6
Close Close Normal 60 total noise from rack
Close Close Maximum 64.5 ASFT maximum operating noise
  • ASFT maximum operation with three or more blade servers
  • Can be used when the intrinsic noise level is above 46dB (A)
  • Less than 65dB (A) even when the rack is mounted at the maximum
  • 20-24dB (A) less noise due to noise level spectrum

Active Noise Control Soundproofing Cover

Active noise control acoustic cover

Generator noise reduction during foundation work of new construction site

    • Before
    • after
    • Active noise control
      acoustic cover

and after installation

  • Acoustic cover: covering the entire generator to block noise (excellent visual effect)
  • Inlet Duct: generator internal temperature control (40 ~ 50 ℃ (40 ~ 50 ℃)
  • Cooling System (ANC): A high-performance blower is installed inside the soundproof lid to cool the generator
    and the noise from the blower is suppressed using ANC technology (up to 15dB reduction)
Measuring position original noise active noise control acoustic cover installation
10m x 1.5m (H) 67.9 dB (A) 61.7 dB (A) ▼ 6.2 dB (A)
  • Demo S-Fan 90

    S-Fan 90 (S-FAN™ Compact hot swap)

    Designed as an S-FAN ™ compact hot swap active silencer, the Axial Fan is installed at the end of the exhaust or intake port to provide noise reduction in the audible frequency range of approximately 10dB (A). The compact S-FAN ™ can be customized for fan sizes or other blowers, such as air devices. The goal of this product is to reduce the noise emitted by the airflow of all electronic products. For more information, please contact Five GT or Silentium representative.

    Product Specifications
    Specifications
    Dimensions L=420mm, W=100mm, H=160mm
    Weight 5kg (Power adaptors ~0.5kg)
    Noise Reduction 12dB(A) Sound Power (3 Passive + 9 Active)
    Power adaptors ANC controller 12V/1.5A (Fan 7.5V, 9V, 12V/5A)
  • S-Cube Development Kit

    SCDK(S-Cube™ Development Kit)

    Silentium's S-Cube ™ Development Kit enables system designers to propose noise reduction solutions such as noise-prone electrical / electronic equipment. This kit is the heart of Silentium's Active Noise Control (ANC) products that reduce noise from annoying server fan noise, equipment, air conditioning systems, and medical devices. Electric/ Electric / electronic equipment The Now you can use Silentium's ANC solution to apply to your electronic products to create a quieter workspace. For more information, please contact Five GT or Silentium representative

      • Product configuration
      • S-Cube™ 1ea
      • speaker 1ea
      • microphone 1ea
      • USB communication cable 1ea
      • DC 12V adapter 1ea
      • program installation CD 1ea

Hearing aid

Hearing protection

Hearing Protection Using IoT-based Active Noise Control Technology
The ANC function and the voice filtering technology are added to the existing hearing protection
so that noise is reduced and communication is possible .

Automotive HVAC ANC System

Automotive HVAC ANC System

  • Active Sound Design
  • By generating sounds not present in the original vehicle, the product controls the ambiance sound in the vehicle
  • Active Noise Control
  • Active noise control reduces noise by 5dB (A)
  • Sensational ride improvement
  • Designed to provide optimum comfort, it provides passengers with relaxation. (High quality sound, high quality implementation)

Automotive AHC application - HVAC 1/2

Automotive AHC application - Headrest

Headrest speakers or conventional door speakers available

4-6dB reduction in overall noise level on rough road conditions