Method, equipment and recording device for suppressing...

Methods and apparatus for blind separation of delayed and filter

Methods and apparatus for connecting and conditioning audio sign

Methods and apparatus for measuring signal level and delay...

Methods and devices for reducing sampling noise in analog...

Methods for processing audio input received at an input device

Microphone apparatus

Microphone array processing system for noisy multipath...

Microphone device and audio player

Microphone expansion for background noise reduction

Microphone noise rejection system

Mobile radiotelephone with handsfree device

Multi-band, digital audio noise filter

Multi-channel signal separation using cross-polyspectra

Multi-compound isobarik loudspeaker system

Multi-directional speaker system

Multi-stage noise-reducing system

Multi-way speaker with a cabinet defining a midrange driver pyra

Mute circuit for use with switching relays

Mute switch