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Active Noise Control

Active Noise Control

Appication Areas

Introducing applications of active noise control technology.

      • 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
  • S-Fan 90

    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 FiveGT 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

    The SCDK™ provides a do-it-yourself ANR development tool that can be used for the application of loud electronic equipment. Developers and engineers can leverage it to implement noise and vibration reduction. The controller unit integrates all the required function: Sound generator, equalization, amplification and the active adjustment processor. The controller is connected directly to the loudspeakers. The controller allows the designer to reduce up to 10dB reduction in addition to what the acoustic materials will diminish.

    SCDK™  Features:
    • Broadband noise reduction up to 10dB(A) beyond the reduction achieved by acoustic material.
    • Adaptable for both point-to-point and point-to zone ANC applications
    • Ideal for acoustic and vibration applications
    • Real-Time Adaptive Algorithms
    • Self calibrating system
    • Standalone mode
    • User-friendly, PC- Based USB interface for the calibration process
    Product configuration
      • S-Cube™ 1ea
      • Speaker 1ea
      • Microphone 1ea
      • USB communication cable 1ea
      • DC 12V adapter 1ea
      • Program installation CD 1ea
  • Active noise control soundproof Cover

    Generator noise reduction during foundation work of new construction site

    Installation Configuration
    • Acoustic cover: covering the entire generator to block noise (excellent visual effect)
    • Inlet Duct: generator internal temperature control(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)
    • Before
    • After
    • Active noise control
      acoustic cover
  • 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.

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

  • ASFT

    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.

    Air flow diagram
    • 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 Front door 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

  • 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.

    Product Feature
    • Through data communication with the server check worker status
    • Using ANC noise reduction effect more than 30dB
    • Taking advantage of the GPS function of smartphone locate the worker's position
    • Real-time noise and noxious gas sensor measurement check the status of working through
    • In the form of sports earphones excellent fit for any movement
    • In the noise clear conversation possible
  • Automotive ANC System

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

Automotive ANC application - HVAC

Automotive ANC application - Headrest

    • Headrest speakers or conventional door speakers available
    • 4-6dB reduction in overall noise level on rough road conditions