Noise barrier apparatus having acoustic wave damping cushions

Noise canceling improvement to stethoscope

Noise rejecting electronic stethoscope

Physiological condition monitors utilizing very low...

Physiological condition monitors utilizing very low...

Pick-up head for an electronic stethoscope

Portable audio device with body/motion signal reporting device

Portable viewable and audible stethoscope

Quick-updating stethoscope receiver

Resonant chamber sound pick-up

Sound monitoring apparatus

Sound pickup sensor

Stereophonic stethoscope

Stethoscope

Stethoscope

Stethoscope and headset system

Stethoscope apparatus

Stethoscope having pseudostereophonic binaural enhancement

Stethoscope with an indexing detent

Stethoscope with reduced susceptibility to interference from amb