Encode—Decode Noise Reduction (NR) Systems

  • John Eargle


This chapter will discuss methods of compressing (encoding) a signal before it is recorded, and expanding (decoding) it when it is played back. In this manner, the compressed signal can be kept above the noise level of the recording medium. If the tracking of the playback expansion action is the inverse of the compression action, then the original dynamic relationships in the program will be kept intact. In the process, however, the recorder’s noise floor will be modulated by the expansion action.


Noise Reduction Wide Dynamic Range Noise Floor Gain Curve Noise Modulation 
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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • John Eargle

There are no affiliations available

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