Device for actuating a membrane and a vehicle comprising a...

Device for actuating a membrane and a vehicle comprising a...

Device for adapting at least one acoustic hearing aid

Device for adjusting a movable electro-acoustic sound transducer

Device for amplitude adjustment and rectification made with...

Device for and method of attaching a speaker

Device for and method of attaching a speaker

Device for and method of mixing audio signals

Device for and method of mixing audio signals

Device for attenuating sound on the human ear

Device for aurally compensated loudness control

Device for automatically controlling audio volume based on...

Device for connecting external sound generator

Device for controlling the volume of a car radio as a function o

Device for conversion between electrical oscillations and acoust

Device for correcting a sound field in a narrow space

Device for deciding pole-zero parameters approximating spectrum

Device for detecting pressure fluctuations, display device,...

Device for electroacoustic sound generation in a motor vehicle

Device for eliminating absolute polarity inversion in a high-fid