Posts Tagged video
Acoustics First has conjured up yet another video demonstration. As the fourth in a series designed to help explain common acoustic principles, this video briefly reveals what is necessary to provide vibration isolation.
Vibration isolation can quickly prove to be obtuse and relatively difficult to understand. Common problems like footfall from upstairs neighbors, industrial noise from machinery and HVAC equipment or isolating speakers and scientific devices can require completely different approaches. Most often, an on site assessment should be completed by a qualified engineering professional to determine an appropriate acoustic solution. In many cases the solution will require a modification to the structure and implement more than a single strategy.
This simple vibration demonstration challenges to provide a basic understanding of how acoustical materials may be used to prevent the spread of mechanical noise and vibration through existing structures like walls, floors and ceilings.
In this acoustic demonstration, a surface mounted piezo transducer connected to an analog meter will register levels of sound vibrations transmitted to the table. A vibrating device placed directly on the surface will transmit sound vibrations and resonate loudly throughout the table. These vibrations will register on the analog meter. By inserting isolation materials between the device and the surface, the mechanical sound transmission is reduced and sound no longer registers on the meter.
CLICK HERE FOR MORE ON: VIBRATION CONTROL PRODUCTS
The awareness of acoustics has dramatically increased over the past ten years. With this awareness, the access to the information on the Internet has also amplified. How does one begin to decipher all of the publications that are now available in magazines and on the World Wide Web? During your research, you may have heard of comb filtering, standing waves and room modes. What do these terms mean and why should I need to know them to understand acoustics? Without using a lot of math or complicated acoustical terms, Acoustics First has produced a video to demonstrate how acoustical panels improve sound within a room. This five-minute demonstration will help you understand that acoustical materials change the physical dynamic of the room to affect sound, in a way that cannot be achieved with electronics.
This video is available under the “Resources” section of our website or at www.acousticsfirst.com/video.
Soundproofing: Using Multiple Materials to Achieve Sound Isolation (Video)
When attempting to soundproof a room, there are various levels of sound isolation and many different types of materials available. How far you go with your construction will depend mostly on they type of sound you wish to abate. The acoustic solution needs to be designed around your specific application. Is it the noise of an industrial plastic shredder or speech from an adjacent office? (alt. Is it the noise of a neighboring industrial plastics shredder or do you need to isolate your studio control room?)
A typical wall construction consists of two layers 1/2″ gypsum applied to either side of a 2×4 wood or metal stud. Many of these walls for residential and commercial interiors will lack insulation in the cavities. This type of contruction will yeild an STC (Sound Transmission Loss) around 31 – 33. By simply adding a layer of fluffy glass fiber insulation to the cavity, the STC will increase by 4-5 points and prevent sonic resonance. Additionally, a layer of mass loaded vinyl barrier will add another 4-5 points. We have prepared a simple video demonstration to illustrate how using multiple layers of common building materials will improve STC values. Click here for the video: http://www.acousticsfirst.com/educational-videos-the-barrier-and-the-bell.htm