Along with the user requirements for indoor architectural lighting, more and more “Human-Centered Design” products have emerged. In the lighting field , the combination of acoustics and lighting as one of the sound-absorbing fixtures has attracted much attention, then do you familiar with the key data and parameters of the acoustic lightings? Let us explain to you.
Polyester acoustic panels (also known as polyester acoustic panels) are widely used as an interior sound
absorbent material for noise control and acoustic optimization. Its sound absorption performance is typically assessed using Sound Absorption Class and Noise Reduction Coefficient (NRC).
Noise Reduction Coefficients (NRC)
The Noise Reduction Coefficient (NRC) is a measurement of a material’s average sound absorption capacity
across its whole frequency range (250 Hz to 2000 Hz). The NRC value typically varies between 0 and 1, with higher values suggesting better sound absorption.
NRC 0.20-0.30: inadequate sound absorption; appropriate for low-noise environments or spaces that do not require significant noise reduction.
NRC 0.40-0.60: Suitable for medium noisy environments, such as general offices, home theaters, and conferencerooms.
NRC 0.70-0.85: excellent acoustic performance, ideal for environments with high noise levels or acoustic
requirements, such as music halls, theaters, and studios.
NRC 0.90 or higher: excellent sound absorption performance, ideal for environments with stringent acoustic requirements.
Specific range
The commonly used noise reduction coefficients for polyester fiber acoustic panels are as follows:
NRC 0.60-0.80: This is a standard range of polyester fiber acoustic panels that are appropriate for ordinary office
situations, commercial spaces, and some residential areas.
NRC 0.80-1.00: This range of polyester fiber acoustic panels is widely used in locations that demand a high level
of sound control, such as conference rooms, audio-visual rooms, concert halls, libraries.
Polyester fiber acoustic panels with a noise reduction value of 0.60 to 0.80 are better suited to offices and
general commercial applications.
For more demanding spaces (e.g., conference rooms, home theaters, concert halls, etc.), it is recommended to use acoustic panels with a noise reduction coefficient of 0.80 or higher, especially when better low-frequency sound absorption is required, which may necessitate thicker acoustic panels or special material surface
treatment.
Acoustic class: Class I typically denotes a high amount of sound absorption, suggesting that the material has excellent sound absorption over a specific frequency range. In several acoustic standards, the sound absorption
class Class I is linked with high-performance sound-absorbing materials, which are typically utilized in
environments requiring high acoustic performance.
Applicable places: Suitable for high noise control applications, including conference rooms, theaters, music halls,and recording studios. These locations have more severe sound quality criteria, including a reduction in noise reflections and echoes.
Sound Quality: Class I sound-absorbing materials contribute to a better and more stable sound environment by minimizing reverberation time and unwanted reverberation of sound.
Common classifications of sound absorption grades (usually categorized as Class I to Class IV):
Class I: Excellent sound-absorbing material, suitable for places requiring high sound absorption.
Class II: Medium sound absorption performance, suitable for general commercial space and office
environment.
Class III and Class IV: Weak sound-absorbing properties, suitable for environments that do not require high sound-absorbing properties, such as warehouses or industrial areas.
Overall, Class I acoustic materials are an excellent sound absorption choice for rooms that demand a high level of noise control and acoustics. If you choose polyester acoustic panels with a Class I acoustic certification, they willeffectively suppress noise and optimize the acoustics of the area.
Lipal SONO series acoustinc lighting has a good sound absorption coefficient, can meet most of the indoor space noise absorption needs, is an excellent choice for offices, libraries, studios, galleries, museums, and other indoor industrial space.
Lipal is committed to developing and producing healthier and more environmentally friendly lighting ranges, and our acoustic lighting range is constantly being expanded to meet the noise absorption requirements of various indoor applications.
For further information, please contact our expert staff at [email protected].
