System and method for generating a separated signal

A signal separation method, comprising

• receiving a set of frequency-domain first signals,
• wherein each frequency-domain first signals comprises frequency-domain first signal elements corresponding to a plurality of frequencies, and
• wherein the set of frequency-domain first signals comprises a plurality of signal sources;
• separating the set of frequency-domain first signals into a set of frequency-domain second signals using an Independent Vector Analysis (IVA) method comprising a learning rule;
• and
• applying one or more constraints to the learning rule.

A system for separating signals, comprising:

• a receiver that receives a set of time-domain input signals;
• a transformer module that transforms the set of time-domain input signals to a set of frequency-domain first signals,
• wherein each frequency-domain first signals comprises frequency-domain first signal elements corresponding to a plurality of frequencies, and
• wherein the set of frequency-domain first signals comprises a plurality of signal sources;
• a frequency-domain signal separator module that separates the set of frequency-domain first signals into a set of frequency-domain second signals,
• wherein the set of frequency-domain second signals comprises a set of separated frequency-domain second signal elements corresponding to individual frequencies of the plurality of frequencies, and
• wherein each frequency-domain second signal element is assigned an identifier which indicates which of the set of frequency-domain second signals includes the frequency-domain second signal element, and
• a reordering module that reorders the identifiers corresponding to at least one frequency to improve the coherence of the frequency-domain second signals to produce a set of frequency-domain third signals.

A system for separating signals, comprising:

• a receiver that receives a set of time-domain input signals;
• a transformer module that transforms the set of time-domain input signals to a set of frequency-domain first signals,
• wherein each frequency-domain first signals comprises frequency-domain first signal elements corresponding to a plurality of frequencies, and
• wherein the set of frequency-domain first signals comprises a plurality of signal sources;
• a frequency-domain signal separator module that separates the set of frequency-domain first signals into a set of frequency-domain second signals using an Independent Vector Analysis (IVA) method comprising a learning rule;
• and
• a constraint imposer module that imposes one or more constraints on the learning rule.