| 摘要 |
The present invention relates to signal processing, and, in particular to a method and system for blind source separation which uses a measure of temporal predictability to identify a source signal from a mixture of such source signals. The temporal predictability of any signal mixture is defined to be less than that of its component source signal. The temporal predictability is used to recover source signals from a set of linear mixtures of source signals by finding an unmixing matrix that maximises the measure of temporal predictability. This measure of temporal predictability can also be used for blind deconvolution, by finding a deconvolution filter, which minimises the degree of predictability of deconvolved signals. Unlike conventional methods and systems for source separation and blind deconvolution, such as independent component analysis, the embodiments of the present invention produce a closed form solution and require minimal assumptions regarding the probability density functions of the source signals. Accordingly, the method is fast. |
