This letter presents an autoregressive (AR) prewhitener for linear frequency modulation (LFM) reverberation to enhance the target signal. The proposed method uses a dechirping transformation to inversely compensate the frequency chirp rate of the LFM and give the LFM reverberation a stationary frequency property in each data block. The left or right beam signal adjacent to the current beam is then used as the reference signal, and the frequency response of each data block modeled using the AR coefficients. Finally, these coefficients are used to implement the inverse filter and efficiently prewhiten the LFM reverberation of the current beam.
Improved prewhitening method for linear frequency modulation reverberation using dechirping transformation. Publishing Authors By Initials
Improved prewhitening method for linear frequency modulation reverberation using dechirping transformation. Journal Published:
PUBLICATION TYPE: Journal Article
Journal: The Journal of the Acoustical Society of America
VOLUME: 123
Page Numbers: EL21
Journal Abbreviation: J. Acoust. Soc. Am.
ISSN: 1520-8524
DAY: 18
MONTH: Mar
YEAR: 2008
Improved prewhitening method for linear frequency modulation reverberation using dechirping transformation. Information
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LANGUAGE: eng
NlmUniqueID: 7503051
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Grant and Affiliation Information for Improved prewhitening method for linear frequency modulation reverberation using dechirping transformation.
AFFILIATION: School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu 701-702, Republic of Korea.
Country: United States
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MEDLINETA: J Acoust Soc Am
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