Improved Low-Frequency Crosstalk Cancellation in Bone Conduction Using Bone Transducers and Probe Microphone

A bone conduction (BC) sound presented on either side of the head will travel to cochleae in both ears, and this crosstalk phenomenon is considered one factor limiting benefits binaural hearing with BC. Previous studies have demonstrated feasibility measuring phase level required for cancellation at cochlea; however, given a human subject’s inability consistently detect low frequencies, method limited cancellations frequencies above 1000 Hz. This study describes an alternative approach implementing system by ear-canal pressure (ECSP). Since ear canal close cochlea, we hypothesized that altering ECSP response BC stimulation may be used achieve cochlea. Our relies measurements estimate impulse responses (IRs) from transducers probe microphone canal. The IRs are then predict microphone’s location. To confirm hypothesis, measured tone reception threshold (TRT), lowest participants could detect, under two conditions: without cancellation. Although was designed occur not TRT results showed were still able perceive below