The various aspects of audi and video authentication and signal processing are addressed as they apply to the introduction of such materials into evidence in the civil and criminal justice systems. The nature of these audio and video materials is usually that of surveillance tapes, which are sometimes bandwidth limited and of poor quality. Issues such as tape enhancement, signal processing, voice identification, editing or tampering, and physical degradation, which must be addressed by the forensic examiner, are discussed.

Author: Owen, Tom
Affiliation: Rodgers and Hammerstein Archives of Recorded Sound, New York Public Library at Lincoln Center, New York, NY
JAES Volume 36 Issue 1/2 pp. 34-41; February 1988
Publication Date: February 1, 1988

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