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Träfflista för sökning "WFRF:(Eriksson Ingvar) srt2:(1990-1999)"

Search: WFRF:(Eriksson Ingvar) > (1990-1999)

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  • Claesson, Ingvar, et al. (author)
  • A Multi-DSP implementation of a Broadband Adaptive Beamformer for use in a Hands-free Mobile Radio Telephone
  • 1991
  • In: IEEE Transactions on Vehicular Technology. - New York : Institute of electrical and electronics engineers. - 0018-9545. ; 40:1, s. 194-202
  • Journal article (peer-reviewed)abstract
    • An implementation of a broadband adaptive array on a multiprocessor digital signal processing (DSP) system for use in a hands-free mobile radio telephone is described. This implementation of a five-microphone adaptive Griffiths-Jim array can handle FIR filters with up to 128 taps behind each microphone at a sampling rate of 8 kHz. The filter structure makes it possible to combine an adaptive array with a noise canceler. The near-field problem has been solved by using focusing, a speech-controlled adaptive algorithm, and a short hourglass. Preliminary measurements indicate a considerable potential for this technique in hands-free mobile telephony. The array gives a 20-30-dB suppression of a broadband jammer covering 300-1100 Hz, even with three reflecting walls surrounding the microphone.
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  • Claesson, Ingvar, et al. (author)
  • Wiener Solution for the Broadband Griffiths-Jim Beamformers
  • 1990
  • Conference paper (peer-reviewed)abstract
    • The problem of finding the Wiener filters for a wideband adaptive beamformer is treated. Explicit expressions are given for the filters and the error power spectrum in the frequency domain. The expressions are simple to program and make it possible to investigate superresolution for wideband signals and to determine sufficient lengths of finite-impulse-response filters in adaptive arrays.
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  • Result 1-10 of 31
Type of publication
journal article (20)
conference paper (7)
reports (4)
Type of content
peer-reviewed (22)
other academic/artistic (8)
pop. science, debate, etc. (1)
Author/Editor
Eriksson, L (13)
Ingvar, M (13)
Claesson, Ingvar (7)
Eriksson, Per (7)
Eriksson, Ingvar (7)
Stone-Elander, S (5)
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Serrander, M (4)
Rönnberg, Jerker, 19 ... (3)
Bengtsson, Bengt (3)
Sundbäck, Ulrik (3)
Fredholm, BB (2)
Ghatan, PH (2)
Bohm, C. (1)
von Holst, Hans (1)
Halldin, Peter (1)
Johansson, H (1)
Danielsson, H. (1)
Wang, S (1)
Ingvar, Martin (1)
Hughes, M (1)
Eriksson, M (1)
Carlsson, L. (1)
Bergqvist, David (1)
Ringborg, U (1)
Lagercrantz, H (1)
Andersson, R. (1)
Ericson, K (1)
Jansson, K. (1)
Rosenqvist, M (1)
Blennow, M. (1)
Rosenqvist, G. (1)
Wiren, M (1)
Forssberg, H (1)
WAHREN, J (1)
Gustavsson, L (1)
Bergman, O (1)
Owall, A (1)
Brodin, LA (1)
Thurfjell, L (1)
Jacobsson, S (1)
Flodmark, O. (1)
Ohlsson, E (1)
Eklöf, Bo (1)
Ingvar, C (1)
Ekberg, K (1)
Samuelsson, S (1)
Beebe, Hugh G. (1)
Bergan, John J. (1)
Goldman, Mitchel P. (1)
Greenfield, Lazar J. (1)
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University
Karolinska Institutet (13)
Blekinge Institute of Technology (7)
Luleå University of Technology (4)
Linköping University (3)
Uppsala University (2)
Royal Institute of Technology (1)
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University of Gävle (1)
Chalmers University of Technology (1)
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Language
English (28)
Swedish (3)
Research subject (UKÄ/SCB)
Engineering and Technology (13)
Natural sciences (1)
Social Sciences (1)

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