Bluetooth Personal Sound Amplifier – Air Microphone Review

Supports Bluetooth earpiece (e.g. Avantree Apico) for simple wireless personal sound amplification using iPhone mic input. Adequate adjustments provided to minimize background noise and limit bandwidth to voice frequencies. Processing mic signal introduces slight delay, but net result is ability to hear voices (e.g. lecture, sermon, movie dialogue) that were unintelligible without this aid to hearing. Inexpensive alternative to pricey Bluetooth "hearing aids" available for iPhone. With improved algorithms to minimize latency/delay, this would be a "killer app" as affordable "hearing aid" using in-ear Bluetooth earpiece.
Review by wnew on Air Microphone.