Experts from France's INSERM and Clermont-Ferrand Faculty of Medicine warn that compressed audio, like MP3s, can damage hearing and contribute to overall fatigue. Despite its convenience, this widespread format sacrifices sound quality and natural dynamics.
Compressed audio—think MP3 files—is ubiquitous today, blasting from radios, stores, bars, nightclubs, and especially our personal headphones. Compression shrinks file sizes by stripping away data deemed "unnecessary," flattening peaks and valleys while eliminating natural silences for easier streaming and storage.
In a study highlighted by France 3 on January 29, 2022, researchers tested this on guinea pigs, whose hearing closely mirrors humans. After exposure to compressed music, the animals lost 50% of their initial auditory strength, with recovery taking up to a week. In contrast, normal music allows human recovery in just 24-48 hours.
The guinea pigs endured four hours of relentlessly engaging compressed sound across all frequencies, with virtually no pauses. This not only induces profound fatigue but heightens vulnerability to everyday noise assaults. Next, scientists will probe if it triggers prolonged disturbances, shifting to human trials using biomarkers to detect neuronal and inner ear cell disconnection.
If confirmed, permanent hearing loss from compressed audio becomes undeniable. The team urges awareness and advocates for audio processing that honors natural pauses and dynamics, preserving ear health.
