Patent ID: 8712951

Claim:
A method comprising: acquiring n two-channel data sets and storing the n two-channel data sets in a memory, wherein for each two-channel data set said acquiring comprises: acquiring a set of samples of a signal a(t) from a first channel, wherein the signal a(t) is a sum of a first interfering noise signal and a target noise signal y(t); acquiring a set of samples of a signal b(t) from a second channel, wherein the signal b(t) is a sum of a second interfering noise signal and the target noise signal y(t), wherein the sample set of the signal a(t) and the sample set of the signal b(t) are acquired over the same interval of time; utilizing a computational device to implement: determining a statistical upper bound for an estimate of a power spectral density of the target noise signal y(t), wherein the estimate is determined by averaging n complex-valued cross spectral densities to obtain a complex-valued averaged cross spectral density, wherein the n complex-valued cross spectral densities are computed based respectively on the n two-channel data sets, wherein said determining the statistical upper bound includes computing the statistical upper bound based on the number n, the complex-valued averaged cross spectral density, a first spectral density and a second spectral density, wherein the first spectral density is an averaged power spectral density for the signal a(t), wherein the second spectral density is an averaged power spectral density for the signal b(t); and storing the statistical upper bound in a memory.