National Semiconductor

Description

DATASHEET LM1894 Dynamic Noise Reduction System DNR. Check for Samples: LM1894 . 1FEATURES. DESCRIPTION. The LM1894 is a stereo noise reduction circuit for This application report deals chiefly with the practical aspects of using the LM1894 , but the information given can also be applied to the LM832. Contents. 1. of the LM1894 . For a more complete description of the principles behind the DNR system, see AN-384. Audio Noise Reduction and Masking (SNAA089). 2. This approach is used by the LM1894 integrated circuit, designed specifically for the reduction of audible noise in virtually any audio source. While either type of ( LM1894 DNR or Dolby) or graphic equalizers (LMC835). It is important that if any noise reduction is used it be placed ahead of any tone controls or equalizers