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Sound Tests and Test Tones |
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Average price : $25 a pair.
| 60Hz | 125 | 250 | 500 | 1k | 2k | 4k | 8k | 16kHz | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Rated | - | 14.8 | 15.0 | 15.7 | 18.7 | 26.6 | 26.4 | 18.9 | - | NRR 20 |
| Measured | 11 | 14 | 15 | 18 | 20 | 20 | 22 | 26 | 38 | ΔF ±8 |
NRR stands for Noise Reduction Rating. It is a standardized measure expressed in decibels (dB), and represents the overall attenuation offered by the earplug. The higher the NRR, the stronger the attenuation. Differences in the NRR of less than 3 dB between earplugs have no importance in practice.
ΔF represents an important factor for musical applications, as it measures the standard deviation from a spectrally flat attenuation between 60Hz and 16kHz. The smaller the ΔF, the higher the fidelity. ±3dB is virtually inaudible and can be considered as the very best one can get.
| Snoring | Bike | Babble | Plane | Gun | Industrial | Club | Rock |
| w/Plug | w/Plug | w/Plug | w/Plug | w/Plug | w/Plug | w/Plug | w/Plug |
| Use | Score | Comments |
|---|---|---|
| At Home | • | Won't block noise. |
| On the go | ••• | Won't block noise but will protect your hearing. |
| Industry | •• | Won't block noise but will protect your hearing. |
| Music | •• | MusicSafe hits the target, though highest frequencies could have been better preserved. |
