Diotic presentation of second-order gradient directional...

Diotic presentation of second-order gradient directional...

Direct tympanic drive via a floating filament assembly

Direct tympanic membrane excitation via vibrationally conductive

Directional hearing aid tester

Directional hearing device

Directional ITE hearing aid using dual-input microphone

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone assembly

Directional microphone system

Directional microphone system providing for ease of assembly and

Directional/omni-directional hearing aid microphone and housing

Discriminating between stationary and non-stationary signals

Disk diaphragm for a loudspeaker