Patent ID: 8874439
Filing Date: 2014-10-28
Classification: G10L

Abstract:
1. A signal separation process, comprising: receiving a plurality of mixed input signals at a data processing apparatus, each mixed signal being a mixture of a plurality of signal sources; using the data processing apparatus, sampling each mixed input signal using a respective rolling sampling window; using the data processing apparatus, transforming signal data in each current sampling window to frequency domain data sets; receiving the frequency domain data sets as inputs to an inter-frequency dependent separation process at the data processing apparatus; operating the inter-frequency dependent separation process at the data processing apparatus, the inter-frequency dependent separation process comprising identifying, by the data processing apparatus, each component of the frequency domain data according to its correct signal source; and generating, by the data processing apparatus, a separated signal for at least one of the signal sources, wherein the inter-frequency dependent separation process uses a multivariate score function defined by the equation: wherein k represents a frequency bin within range 1 to K, φ(•) is the score function, s