Feedback suppression in digital signal processing hearing aids

Feedback system for a sub-woofer loudspeaker

Feneme-based Markov models for words

Ferroelectric composite film acoustic transducer

Ferrofluid centered voice coil speaker

Fetal and infant audio bag apparatus

Fetal communication apparatus

Fetal communication device

Fetal speaker system and support belt for maternal wear

FFT-based technique for adaptive directionality of dual...

Fiber optic earpiece to reduce radiation transmitted to a...

Fiber-honeycomb-fiber sandwich speaker diaphragm and method

Fidelity speaker

Field layer speaker for consumer products

Field serviceable planar loudspeaker

Film-type audio output apparatus

Filter arrangement for an audio companding system

Filter bank system for hearing aids

Filter circuit and audio signal processor provided therewith

Filter circuit for an electret microphone