3M’s new Ambient Noise Reduction technology reduces distracting room noise by an average of 75% without eliminating critical body sounds. This stethoscope is uniquely equipped to help you pick up difficult-to-hear heart, lung and other body sounds.
How Ambient Noise Reduction works
The proprietary Ambient Noise Reduction (ANR) technology, internal to the chestpiece, acoustically cancels out an average of 75% of distracting room noise, greatly enhancing overall utility. This acoustic canceling effect is different from electronic filtering, which may also filter out some portions of body sounds clinicians need to hear.