Signal-source characterization system
First Claim
1. A source characterization system for determining a characteristic variable of a source signal from a primary source on the basis of a plurality of input signals, the source characterization system comprising:
- a plurality of inputs for receiving said plurality of input signals, respectively, each of said plurality of input signals being a different mixture of the source signal and a plurality of other source signals from other respective primary sources;
a pre-processing circuit coupled to said plurality of inputs for determining a characteristic variable of each of said plurality of input signals so as to form a plurality of characteristic variables for the plurality of input signals, respectively; and
a separation circuit for determining the characteristic variable of the source signal on the basis of the plurality of characteristic variables determined for the plurality of input signals.
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Accused Products
Abstract
A source characterization system (8) which, starting from linear convolutive mixtures E(t) of primary signals X(t) from sources (S1-Sn), determines signals F(t) which form an estimate of a characteristic variable of at least one primary signal X(t). This variable may be an average energy, a spectral density or an autocorrelation function. A pre-processing device (20) enables the signals E(t) from the mixtures to be pre-processed before they are applied to the source separation device (10). The measured variable may serve to retroact on the operation of the sources. The source characterization system may be used for the control of apparatuses for transmitting and/or receiving electric, acoustic or electromagnetic signals.
35 Citations
11 Claims
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1. A source characterization system for determining a characteristic variable of a source signal from a primary source on the basis of a plurality of input signals, the source characterization system comprising:
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a plurality of inputs for receiving said plurality of input signals, respectively, each of said plurality of input signals being a different mixture of the source signal and a plurality of other source signals from other respective primary sources; a pre-processing circuit coupled to said plurality of inputs for determining a characteristic variable of each of said plurality of input signals so as to form a plurality of characteristic variables for the plurality of input signals, respectively; and a separation circuit for determining the characteristic variable of the source signal on the basis of the plurality of characteristic variables determined for the plurality of input signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification