Spectacle type communication device
Spectral management system
Spectral maxima sound processor
Spectrum division/multiplication communication arrangement...
Speech aid for laryngectomized people
Speech and sound synthesizing
Speech converting device and method
Speech enhancement using multiple microphones on multiple...
Speech presence detector and method therefor
Speech recognition system
Speech speed conversion method and speech speed conversion...
Speech suppression by predictive filtering
Splash proof acoustically resistive cover assembly
Spring force biasing means for electroacoustical transducer...
Stand for articles
Step-up circuit for driving full-range-element electrostatic...
Stereo electroacoustical transducing
Stereo headphone
Stereo microphone apparatus
Stereo reproduction system