Methods and apparatus for signal source separation
AssigneeInternational Business Machines Corporation
InventorsSabine V. Deligne, Satyanarayana Dharanipragada
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Abstract
A technique for separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source comprises the following steps/operations. First, two signals respectively representative of two mixtures of the first source signal and the second source signal are obtained. Then, the first source signal is separated from the mixture in a non-linear signal domain using the two mixture signals and at least one known statistical property associated with the first source and the second source, and without a need to use a reference signal.
Claims31
A method of separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source, the method comprising the steps of:
- obtaining two signals respectively representative of two mixtures of the first source signal and the second source signal;
- and
- separating the first source signal from the mixture in a non-linear signal domain using the two mixture signals and at least one known statistical property associated with the first source and the second source, and without a need to use a reference signal.
Apparatus for separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source, the apparatus comprising:
- a memory;
- and
- at least one processor, coupled to the memory, operative to:
- (i) obtain two signals respectively representative of two mixtures of the first source signal and the second source signal;
- and (ii) separate the first source signal from the mixture in a non-linear signal domain using the two mixture signals and at least one known statistical property associated with the first source and the second source, and without a need to use a reference signal.
An article of manufacture for separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source, comprising a machine readable medium containing one or more programs which when executed implement the steps of:
- obtaining two signals respectively representative of two mixtures of the first source signal and the second source signal;
- and
- separating the first source signal from the mixture in a non-linear signal domain using the two mixture signals and at least one known statistical property associated with the first source and the second source, and without a need to use a reference signal.
Apparatus for separating a signal associated with a first source from a mixture of the first source signal and a signal associated with a second source, the apparatus comprising:
- means for obtaining two signals respectively representative of two mixtures of the first source signal and the second source signal;
- and
- means, coupled to the signal obtaining means, for separating the first source signal from the mixture in a non-linear signal domain using the two mixture signals and at least one known statistical property associated with the first source and the second source, and without a need to use a reference signal.
Dependencies are inferred from the claim text.