Description

Book Synopsis

Mobile phones as well as tablets are omnipresent and belong to everyday life. Today audiovisual communication takes place at different locations and in a large variety of acoustic environments. In consequence, the intelligibility as well as the quality of speech may significantly be degraded by ambient background noise. In order to improve speech intelligibility and to ensure a convenient communication with high audio quality, speech enhancement techniques are required. In this thesis all critical components contributing to the enhancement of the up-link signal are addressed:

signal capturing at the acoustic front-end with a new near field beamformer

new codebook based speech and noise estimation procedure generating and exploiting reliability information, and

actual noise reduction exploiting spectral dependencies of human speech.

For the acoustic front-end of the digital processing chain a novel concept for the filter optimization of a near field beamfor

Speech Signal Enhancement by Information

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    A Paperback by Ph.D. Heese Dr Florian Kurt Wolfgang Paul

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      Publisher: Verlag G. Mainz
      Publication Date: 1/19/2016
      ISBN13: 9783958861251, 978-3958861251
      ISBN10: 3958861253
      Also in:
      Communication studies

      Description

      Book Synopsis

      Mobile phones as well as tablets are omnipresent and belong to everyday life. Today audiovisual communication takes place at different locations and in a large variety of acoustic environments. In consequence, the intelligibility as well as the quality of speech may significantly be degraded by ambient background noise. In order to improve speech intelligibility and to ensure a convenient communication with high audio quality, speech enhancement techniques are required. In this thesis all critical components contributing to the enhancement of the up-link signal are addressed:

      signal capturing at the acoustic front-end with a new near field beamformer

      new codebook based speech and noise estimation procedure generating and exploiting reliability information, and

      actual noise reduction exploiting spectral dependencies of human speech.

      For the acoustic front-end of the digital processing chain a novel concept for the filter optimization of a near field beamfor

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