FIELD: measuring frequency response of sound-transmission rate of sound-protection walls and jackets. SUBSTANCE: method involves use of mass law and detection of sound-transmission rate taking into account angular frequency sound wave approaching plate, density and mechanical losses of plate material, its height and linear size as well as its natural frequency. Method provides two different equations for calculation of said rate for different frequencies which are below threshold frequency $$$ and above frequency $$$ which is greater than $$$. It is assumed that sound-transmission rate for frequencies which are in range of $$$ is equal to zero. EFFECT: elimination of abnormal large deviation between experimental and calculated values of sound-transmission rate. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ESTIMATION OF PARAMETER EFFECT OF FLEXIBLE RECTANGULAR PLATE SECURED OVER PERIMETER ON EFFICIENCY OF ITS SOUND INSULATION WHEN PLATE IS EXCITED BY STATIONARY STOCHASTIC SOUND ACTION | 1996 |
|
RU2111552C1 |
| DEVICE TO PREVENT INGRESS OF MECHANICAL PARTICLES IN ELECTRICALLY DRIVE ROTARY PUMP | 2011 |
|
RU2499128C2 |
| METHOD OF VAPOUR DROPS DEPOSITION IN COOLING TOWER | 2008 |
|
RU2360198C1 |
| ELECTRIC MOTOR NOISE BALANCING DEVICE | 2013 |
|
RU2528552C1 |
| METHOD OF RECONSTRUCTING SEA-FLOOR RELIEF WHEN MEASURING DEPTH USING HYDROACOUSTIC APPARATUS | 2011 |
|
RU2466426C1 |
| METHOD FOR DETERMINING SOLID OIL PRODUCT RESIDUES IN TANK CAR | 2007 |
|
RU2348015C1 |
| ACTIVE SOUND SUPPRESSION TECHNIQUE | 1999 |
|
RU2185666C2 |
| METHOD OF THE STEAM PRECIPITATION IN THE WATER-COOLING TOWER | 2005 |
|
RU2295684C1 |
| METHOD OF STEAM DEPOSITION IN COOLING TOWER | 2007 |
|
RU2339888C1 |
| TECHNIQUE FOR SOUND TREATMENT OF ROOMS | 1996 |
|
RU2127495C1 |
