A technique to reduce the audible effect of a digital error in a digital audio system when the error cannot be corrected by the techniques of digital error correction. Error concealment usually consists of making a smooth transition from the last good data block before the error to the first good data block after the error, usually in some form of interpolation, i.e., crossfading. Error concealment is the reason that a digital copy from one source is often not an exact clone of the digital master. When duplicating a digital master, error correction and error concealment algorithms must be thoroughly understood and the dubs checked for reproduction quality.
See error protection.