AGC's “Madomado” high soundproofing interior window, which has won the “Home Theater Grand Prix” gold award for five consecutive years, creates a comfortable acoustic environment. Let's take a look at why it is used in home theater rooms and chosen by movie and music lovers.
Question1Why can we hear sound?
When you watch a movie on TV, there is always air in the living room where the TV is located. The TV speakers vibrate, causing the air in the living room to vibrate. These vibrations are transmitted to a person’s ears. The person recognizes these vibrations as sound with their eardrums, allowing them to hear the movie’s audio.
In other words, we can only hear sound when the air vibrates.
By the way, in the vacuum of space, even if a sound is produced, there is no air to transmit the vibrations, so the sound cannot be heard.
Question2Is there any good way to cut out the noise？
I want to watch a movie on TV carefully, but it’s hard to hear the dialogue due to the noise outside. I want to watch the movie at a high volume, but I lower the volume because it would disturb my neighbors. Have you ever experienced something like this?
In most cases, sound comes in and goes out through the walls, ceiling and windows. Of these, the largest amount of sound comes in and goes out through the windows.
Sound-proofing and sound-insulating glass is effective for cutting out the sound that comes in and goes out through the windows.
By simply changing the existing window glass, you can easily improve the sound-proofing effect.
Question3How effective are soundproof windows?
There are various types of glass.
There is 'double glazing', which has an air layer between two panes of glass, and 'laminated glass', which has an interlayer between two panes of glass. There is also 'double glazing', which has a large air layer between the outer and inner windows.
Soundproofing performance is determined by the thickness and structure of the glass, but it improves the wider the gap (air layer) between the windows. In the case of AGC's “Madomado” double-glazed (interior) windows, which are added to existing windows after the fact, a large air layer can be created, and noise from outside can be cut by about half*.
*Cuts approximately 40 to 45 dB of traffic noise (80 to 90 dB).
Soundproofing effect varies depending on the glass
※1 In the case of double glazing, the airtightness of the sash is a factor.
※In the case of double glazing, the glass may vibrate at specific frequencies, resulting in a decrease in sound insulation performance.
Question4Why is the soundproofing performance of AGC's double-glazed (interior) window “Madomado” so high?
By using “Lami-Shut 35” laminated glass, which has a special soundproof film sandwiched between two sheets of glass, a high sound insulation level (equivalent to T-5 grade*) is achieved.
*JIS standards for sound insulation performance range from T-1 to T-4, with T-4 being the highest grade. T-5 is not a JIS standard, but has a sound insulation level equivalent to approximately 45dB.
*JIS (Japanese Industrial Standards): Japanese national standards that define standards and measurement methods for Japanese industrial products.
Using a composite structure of high-strength aluminum sashes and PVC (polyvinyl chloride), it is possible to achieve sound insulation against low-frequency noise, which is difficult to achieve with ordinary interior windows.
Inside: Aluminum
Outside: PVC (polyvinyl chloride)
Because measures to improve airtightness are incorporated into every detail, sound does not leak.
The airtightness is improved by attaching mohair and airtight sheets. Attention is paid to even the smallest details.
Did you understand why AGC's “Madomado” is used in home theater rooms? With its high soundproofing performance, you can enjoy your favorite movies and music to your heart's content without worrying about the people around you.
That's why it's chosen by enthusiasts.
