The phenomenon of perceived loudness in one's own voice due to bone conduction thresholds exceeding air conduction is termed?

The phenomenon referred to in the question is known as the occlusion effect. This effect occurs when something, such as an ear plug or earmold, blocks the ear canal, which alters how the sound vibrations are transmitted through the bones of the skull compared to those that travel through the air. When bone conduction thresholds exceed air conduction, it results in a heightened perception of one's own voice, often described as a louder or more resonant sound.

In this situation, because the occlusion prevents sound from escaping the ear canal, the vibrations of the person's voice that would usually be transmitted through air are more pronounced through bone conduction. Thus, this leads to an enhanced perception of loudness.

Other terms mentioned, such as the echo effect, impedance effect, and reverberation effect, do not correctly describe this specific phenomenon of perceived loudness related to the occlusion of the ear canal. Each of these other effects pertains to different aspects of sound and hearing, focusing on reverberations, reflections of sound, or the resistance of sound passing through mediums, which are not directly connected to the perception of one's own voice as influenced by bone conduction and ear canal occlusion.