ELECTRONIC SYSTEMS NOISE REDUCTION

Brand Owner Address Description
VIBRACOUSTIC FREUDENBERG, CARL Hohnerweg 2 - 4 D-69469 Weinheim Germany electronic systems for noise reduction by sound signals radiated out-of-phase in noisy interiors whose major components are sensors for scanning the vibration as well as magnetic devices influenced by scanners, relays capable of producing counter vibration via a hydraulic fluid;covers and shields with or without sound absorbing lining for use as parts of machinery, tubular bodies, especially with sound absorbing lining for use in parts of machinery; sound absorbing systems, especially on the bases of metal elastomer sandwiches including hydraulic bearings for use as parts of machinery; air springs and struts especially those using bellow of elastomeric material for support of vibrating parts of machinery;elastic springs, especially multi-layer springs for noise damping, and shock insulation, especially hooked tension springs and buffer springs, all made of a composition of rubber and metal;insulating products, namely membranes double coated fabrics, rubberized fabrics for use in vehicles, clothing and railways systems for insulation against sound, cold, heat, shock, vibration, shaking, moisture and environmentally dangerous substances; protective roofings made of fabrics and foams being coated and impregnated with bitumen or bituminous substances; load-bearing surface lining with integrated sound insulation, especially for vehicles; sandwich systems for sound and/or vibrations absorbing applications, namely motor bearings, railways and rail vehicles, trams and mine cars;shaped or plain carpeting, especially with flexible and/or still heavy coatings as well as integrated dimensional foam articles for reducing noise especially for vehicles;corrosion inhibiting coatings for metal surfaces of vehicles;undercarriage and corrosion protecting agents for application to metal surfaces of vehicles in the nature of rubber spray-on undercoating;covers mounted on motors, namely covers for vehicle construction as well as covers on automotive bodies, namely insulating capsules in the form of structural parts such as hoods, all for sound absorbing purposes; covers and shields with or without sound absorbing lining for use as parts of vehicles, namely hoods; tubular bodies, especially with sound absorbing lining for use as parts of vehicles; sound absorbing systems, especially on the basis of metal elastomer sandwiches including hydraulic bearings for use as parts of vehicles; air springs and struts, especially those using bellows of elastomeric material for support of vibrating parts of a land vehicle suspension system; resiling crossings between cars, namely metal railcar knuckle couplers; compensators used to compensate axial, lateral and angular forces of hoses;technical consultation and materials testing in the field of noise reduction;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. In an apparatus which estimates characteristics of a surrounding noise only when an input signal is soundless and performs a noise reduction or suppression of the input signal based on the estimated result, a signal noise ratio is estimated from the input signal, and an automatic switch or an automatic adjustment is performed so as to execute a noise reduction only when the signal noise ratio is good, otherwise to avoid the noise reduction or make the noise reduction degree smaller.