Which classification of an audiogram features all thresholds at approximately the same intensity across all frequencies?

A flat curve on an audiogram indicates that the hearing thresholds are consistent across all tested frequencies, typically showing little to no variation in intensity levels. This characteristic suggests that the individual has uniform hearing sensitivity throughout their hearing range. Such a pattern can often be associated with conductive hearing loss or a particular type of sensorineural hearing loss where no frequency-specific deficits are noted.

In audiological assessments, a flat audiogram provides important information regarding a patient’s hearing profile and can guide the appropriate interventions or hearing aid fittings. The realization that the hearing ability is consistent helps audiologists and practitioners to formulate a management plan without having to focus on specific frequency compensations that other types of audiogram shapes would necessitate.