MR.DMITRIY picture

Mr.Dmitriy is come fro Ukraine, he is a Acoustics Engineering, specially in Physical Acoustics, so he is a professor in Acoustics Engineering. Now work as a Technical Consultant in Stp. Before he work as a Technical Consultant in Stp, he is a experts in Car Audio System, he won alot of champions in EMMA, ISACA international competition.
Mr.Dmitry said : If you wan to get maximum effect use complex of suitable materials for each surface and follow " Applications instructions. Acoustic Materials" . Different materials are different effective.
3 catagories of soundproof :
a) Vibrations Damping Materials

- Reduce the low frequency noise (50hz - 1000hz)
- absorb / reduce the vibrations
b) Sound Damping Materials

- Reduce / Absorb / Reflect the mid high frequency
- Reduce wind noise, road noise and heat insulating properties.
c) Contact Damping

- Absord mid to high frequency
- Required to eliminate squeak of the contacting element of interior and also for joint sealing
Only use a suitable materials of soundproof, then just can efficiently to reduce the noise. If not。。。。。just wasting ur money
Mr.Dmitriy was explained the door strucure and vibrations caused by mechanical movements.

Explained that where is the noise come from

Use a dry cloths clean the surface

Measure the size of the door

Using the Stp BiMast Bomb to reduce the door vibrations and noise

Pls Kindly reply my topic, so that i can keep on share more pic , thank you
This post has been edited by mr.wong: Mar 13 2011, 07:05 PM
Mar 13 2011, 06:51 PM, updated 15y ago
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