Frequency domain adaptive control system

Frequency domain speech coding

Frequency modulation broadcast transmitter synchronization metho

Frequency modulation multiplex demodulation device

Frequency modulation-type transmitting apparatus

Frequency response adjusting device

Frequency response display for use with a graphic equalizer

Frequency response enhancements for electro-dynamic...

Frequency response equalization system for hearing aid...

Frequency response equalizing network for an electrostatic louds

Frequency selection circuit for hearing aids

Frequency selective acoustic waveguide damping

Frequency selective active adaptive control system

Frequency selective sound blocking system for hearing protection

Frequency shifter for use in adaptive feedback cancellers...

Frequency threshold audio activity detector

Frequency translation by high-frequency spectral envelope...

Frequency transposing hearing aid

Frequency transpositional hearing aid with digital and...

Frequency transpositional hearing aid with single sideband...