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EMBEDDED SPEECH MATERIAL
The combination of the two produces a resonance at approximately 2700 Hz (as in the normal ear)
We chose this solution to offer a more comfortable earmold than acrylic for the Anesthesiologist's benefit during long use times
Etymotic Musician Filters Filter NRR:ER-9 *** Login in to seeThis product page is for the Etymotic Filters only. The Etymotic musician ear plugs with filters, or buttons, have a diaphragm which functions as an acoustic compliance, while the volume of air in the sound bore of the custom ear mold acts as an acoustic mass. The combination of the two produces a resonance at approximately 2700 Hz (as in the normal ear), which results in smooth, flat attenuation. Etymotic Filters & Reduction Levels ER 9 Provides flat
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