Linear or flat attenuation. You might have seen these terms used in relation to earplugs. But what do they actually mean? The meaning of both terms is the same. It is a property of filter earplugs which are perfect for listening to music. Thanks to linear attenuation filters, you hear the music as it was meant to be heard. They just reduce the volume to a safe level. Ideal for musicians and festival- and concertgoers. The PartyPlug Pro Natural earplugs have this type of filter.