Receiver with field-strength dependent noise reduction control

Receiver-transmitter of communication equipment

Receiving apparatus for digital broadcasting

Receiving apparatus for stereophonic broadcast having amplitude

Receiving set with playback function

Receptacle for earphone cord

Reception volume limiting circuit

Recessed audio speaker system

Recessed speaker box and mount

Rechargeable hearing aid

Rechargeable hearing aid

Rechargeable hearing aid

Rechargeable hearing aid system

Recognition of speech or speech-like sounds using associative me

Reconfigurable speaker system

Recorded conversation method for evaluating the performance of s

Recorder to instrument amplifier interface apparatus and method

Recording a three dimensional auditory scene and reproducing...

Recording and play-back two-channel system for providing a...

Recording and reproducing apparatus for audio signal