Triphonic sound system

Tuning apparatus and method

TV stereo adapter

Two methods and two devices for processing an input audio...

Two-tone test signal method for BTSC calibration

Ultra-directional speaker system and speaker system drive...

Universal four-channel surround sound speaker system for...

User configurable headset for monaural and binaural modes

Variable bandwidth multivoice demodulating circuit

Variable frame rate, fixed bit rate vocoding method

Variable matrix decoder

Variable matrix decoder

Variable matrix decoder for periphonic reproduction of sound

Variable matrix decoder with three output channels

Variable rate and variable limit dimension controls for a direct

Vehicle audio system with directional sound and reflected...

Vehicle audio system with directional sound and reflected...

Vehicle sound system

Vehicle-carried sound reproduction apparatus

Vehicle-mounted three dimensional sound field reproducing...