D values, L values, N values: A discussion about soundproof room performance metrics that anyone can understand.

What I will explain this time is focused on three values: "D value," "L value," and "N value/NC value"!

This time, I will discuss the numbers that cannot be avoided when talking about the performance of soundproof rooms. The "D value" is probably the most commonly seen number when considering building a soundproof room. Formally, it is called "Sound Pressure Level Difference." The larger the number, the higher the sound insulation performance. Next, there is the "L value," which is often seen in apartments and similar settings. This refers to the "Floor Impact Sound Level," which measures the impact sound between floors of adjacent rooms. A larger number indicates a greater impact. The "N value" and "NC value" refer to the "Indoor Noise Level," which quantifies external noise and equipment noise such as plumbing. Both are used similarly, but the term "NC value" is specifically used to distinguish steady noise, such as that from air conditioning. *For more details, you can view the related links on the blog. *For further information, please refer to the PDF document or feel free to contact us.

Soundproofing panels