Self-compensating equalizer

Series-configured crossover network for electro-acoustic...

Signal amplification system with automatic equalizer

Signal control apparatus

Signal processing device for processing sound quality, and recor

Signal processing system, signal processing apparatus and...

Signal processing system, signal processing apparatus and...

Signal transfer and system utilizing transmission lines

Slide control system

Sound device

Sound field control apparatus and sound field control method

Sound field correcting method in audio system

Sound field expanding apparatus with improved tone control syste

Sound field forming circuit and sound field forming apparatus

Sound generating apparatus and method, sound generating...

Sound processing apparatus

Sound processing device

Sound quality adjustment circuit

Sound quality adjustment device

Sound quality control system