Apparatus for on-ear operation and off-ear operation with...

Apparatus for operation in an on-ear mode and an off-ear mode

Apparatus for performing noise cancellation in telephonic device

Apparatus for picking up sound waves

Apparatus for processing document data including voice data

Apparatus for processing stereo signals and universal AM stereo

Apparatus for producing sound effect for mobile object

Apparatus for protecting microphones

Apparatus for providing sentence-final accents in synthesized am

Apparatus for receiving and processing frequency modulated elect

Apparatus for recording and reproducing human speech

Apparatus for recording and reproducing human speech by its anal

Apparatus for rectifying resonance in the outer-ear canals...

Apparatus for reducing noise in a closed space having divergence

Apparatus for reducing noise in audio signals

Apparatus for reducing noise in space applicable to vehicle comp

Apparatus for reducing noise in space applicable to vehicle pass

Apparatus for reducing vibrations generated by a loudspeaker...

Apparatus for reproducing sound field

Apparatus for reproducing sound with a reduced dynamic range