Deep canal microphone placement

Amplification of external sound via deep canal microphone placement" refers to a hearing aid design technique, not a biological molecule or receptor. It involves positioning the microphone deep within the ear canal to leverage the natural acoustic amplification provided by the pinna (outer ear) and ear canal, which boosts high-frequency sounds (2000-5000 Hz) by 5-8 dB compared to behind-the-ear (BTE) placements.[1] This placement enhances speech intelligibility, directivity (better front-to-back sound discrimination), sound localization via head-related transfer functions, and reduces wind noise and feedback.[1][3] Examples include ExSilent's MaRiC (Microphone and Receiver in Canal) in the Ytango device and Mic-in-Helix (MIH) instruments, which connect a canal module to an over-the-ear processor.[1][3] These approaches improve performance in noise without increasing electronic gain, allowing smaller devices with lower power use and open-fit comfort.[1][3] No drugs interact with this as it is a hardware feature for hearing loss management, not a therapeutic target like enzymes or receptors.[1][2][6]

Other names

MaRiC (Microphone and Receiver in Canal)Mic-in-Helix (MIH)Canal microphone placementIn-the-canal microphoneDeep ear canal microphone