The LM832 is a stereo noise reduction circuit for use with audio playback systems The DNR system is noncomplementary meaning it does not require encoded source material The system is compatible with virtually all prerecorded tapes and FM broadcasts Psychoacoustic masking and an adaptive bandwidth scheme allow the DNR to achieve 10 dB of noise reduction DNR can save circuit board space and cost because of the few additional components required The LM832 is optimized for low voltage operation with input levels around 30 mVrms