What you need to know about STC and NRC

If you are looking for soundproofing and better sound quality, you need to understand technical terms like Sound Transmission Class (STC) and Noise Reduction Coefficient (NRC). Both of these terms are essential measures of noise absorption and sound blocking.

The Sound Transmission Class (or STC) is a single number method of rating how well a product of building material reduce sound transmitted through a surface. This rating is widely used in the US to rate interior and exterior partitions, ceilings, floors, doors, windows and exterior wall configurations.

The Noise Reduction Coefficient (or NRC) is a single number tested rating used to measure the sound absorption of the material. This single number NRC value ranges from 0.0-1.0 referring to the average sound absorption performance of a material. A higher NRC product rating reduces echo and Reverberation Time (RT), which is the goal in absorbing sound.

Our Quilted Studio Blanket is an excellent solution that may help absorbing sound reflection and reverberant noise in a Studio, building or open room. These blankets feature a minimum 90% NRC sound absorption, an R Value = 9, a 50% recyclable content, is certified VOC compliant and reflects 97% of radiant heat.

It also assures that the sound can be absorbed efficiently with NRC ratings from 0.90 to 1.05. The Standard Quilted Studio Blanket colors are white or black and manufactured up to 36 feet in length.

When you use our products with a high NRC you can provide perfect sound absorption and create a personalized listening experience in a small, medium, or even large performing spaces.

Our Quilted Studio Blanket has been on the market since 1964, covering millions of square feet on all major filming studio walls, ceilings and sound stages worldwide.

You can find the Acoustical Performance information about our products on our website www.insulquilt.com.

Work Cited

Wikipedia definitions and ASTM C423