Herbert Gish, Douglas Cochran

Research output: Chapter in Book/Report/Conference proceedingConference contribution

54 Scopus citations


The authors introduce a test for detecting the presence of a common signal on M noisy channels that generalizes a popular technique using the magnitude-squared coherence (MSC) estimate for detecting a common signal on two channels. The basis of this test is the generalized coherence estimate, a statistic involving the normalized M multiplied by M Gram matrix determinant, which reduces to the MSC estimate for M equals 2. The distribution of the generalized coherence estimate is derived under the assumptions of independent noise and no common signal on the M channels.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Number of pages4
StatePublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics


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