Different Types of Sounds

Sound insulation is not to be confused with sound absorption - they serve two different functions. This article covers sound insulation materials and the different types of sound insulation that can be used to effective reduce the transmission of sound energy.

When you soundproof a room you can either do it to reduce noise, which is nothing more than blocking sound waves by using distance or objects to block its passage; or you can use noise absorption, which transforms sound waves by suppressing echoes, resonance and reflection. The insulation materials have damping characteristics, which controls the sound levels, reducing and distorting them.
Sound insulation on the other hand is the prevention of the transmission of sound; a reduction in the transmission of sound energy to the adjoining air space. There are several different types of sound insulation materials that can be used to reduce noise and the transmission of sound.
A brief look at the different types of insulation materials will be helpful in making informed decisions for your home.

You can use fiberglass insulation inserted between the studs in drywall layers as well as foam insulation that can be blown into the wall without removing the drywall. The same methods can be used for flooring as well.
You can use the passive absorption method to reduce sound; mineral wood insulation or acoustic foam forces sound wave to change direction several time and travel a great distance before it can completely pass through the insulation material. Each time the waves change direction part of the energy gets absorbed by being converted to heat.
Lead sheets are very good at blocking sound transmission; in addition they are easy to work with, cut and install. Foil faced acoustic pipe wrap can be used to muffle sound from noisy pumps, generators, engines, saniflow systems, etc. Acoustic mineral wool is very useful in reducing airborne noise and can be used quite successfully in walls, suspended ceilings and flooring joists. The density of the material makes it an efficient sound absorber.
It is recommended that you do a complete research on the subject before attempting to use sound insulation materials.
Firstly, to download SFX, you might first look at what sound designers call "hard sound effects". "Hard sound effects" are clear crisp sound effects like people firing guns, breaking sounds, or a front door slamming shut. Many people also download SFX that are called "ambient" or "background sound effects". Background sound effects don’t necessarily synchronize with any specific movement on screen, in a film or in a PowerPoint production but provide ambiences to the people watching such as forest sounds, crowds at a ball game, or an oven running.
Thirdly, if you want to download SFX that make your production as professional as the feature films, you’ll be looking for something called "Foley sound effects". Foley sound effects can be sound effects that are difficult to record as they take critical timing; a famous example of Foley sound effects are footsteps.
Finally, you might want to download SFX what are called "design sound effects". Design sound effects are normally considered futuristic sound effects and are often used in science fiction films. These sound effects are not what one would normally call "realistic" sound effects, but are sound effects that incorporate some kind of musical aspect to them.
It is important that you remember all downloadable sound effects come in different qualities, such as either 16 bit or 24 bit (higher quality), so make sure to determine what kind of sound effects you want before you go ahead and download SFX.