The following reason re-motivated me to bring up the topic of custom ear plugs so we can pass on the message about how important it is to actually protect our ears form a very young age.
Yes, non-custom solutions are convenient in the short term, at cost of unpredictable performance.
Here is some illustrations [Images courtesy of Lantos Technology| US and Presenters Brian Fligor, ScD] to make the point about custom earplugs versus non-custom.
📷 1 Non-custom earbuds allow low frequencies to enter and escape through gaps between the ear canal and the headphone.
📷 2 The high frequencies can be absorbed rather than bend around sharp bends in a curvy ear canal fit with a non-custom earbud.
📷 3 In a well-fit custom product, regardless of the shape of the ear canal, the fidelity is maintained. Fidelty of music is maintained in a custom earplug.
In summary non-custom solutions are convenient in the short term, at cost of unpredictable performance. And customisation (when done properly) increases likelihood of consistent hearing protection device use, it is effective sound isolation induces personal listening device users to moderate listening level.
So the aim is to make you aware of the importance of custom made ear plugs.