How should I interpret the sound graph in the catalogue?

 In

The vertical axis is the absorption coefficient, which indicates the level of absorption for every given sound frequency. 0 means that no sound is absorbed and 1 means that all sound is absorbed.

On the horizontal axis, you have the sound waves and frequencies (HZ). The higher the frequency of a waveform, the higher the pitch of the sound you hear. The graph shows the level of absorption on different frequencies.

BAUX wood wool is well equipped to absorb human voice frequencies (between 500-4000Hz). NRC (Noise Reduction Coefficient) is an average rating of how much sound an acoustic product can absorb. Here is the full catalogue!

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