Title:
SIGNAL SOURCE CHARACTERIZING SYSTEM
Document Type and Number:
Japanese Patent JP3887028
Kind Code:
B2
Abstract:
PURPOSE: To obtain a signal, which characterizes each of primary signals from plural signal sources mixed by linear convolution, with a high precision in a small number of signal calculation processing stages.
CONSTITUTION: A signal source characterizing system 8 starts from a linear convolution mixture E(t) of primary signals X(t) from plural signal sources S1 to Sn and determines a signal F(t) which indicates the estimated value of a characteristic variable of at least one primary signal X(t). This characteristic variable can be the average energy, the spectral density, or the auto correlation function. A preparatory processing means 20 performs preparatory processing of these signals E(t) before signals E(t) from the mixture are supplied to a signal source separation means 10.
Inventors:
Yannick Devil
Application Number:
JP5724495A
Publication Date:
February 28, 2007
Filing Date:
March 16, 1995
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04B14/04; G06F17/10; G06K9/62; G06N3/04; H03G3/32; H04B15/00; (IPC1-7): H04B14/04; G06F17/10
Domestic Patent References:
| JP4501330A | ||||
| JP5087619A | ||||
| JP6011384A | ||||
| JP60000378A | ||||
| JP64073272A |
Foreign References:
| US4754486 |
Attorney, Agent or Firm:
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa
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