Processing signals
A technology for processing signals and signals, which is applied in the direction of microphone signal combination, instruments, systems for eliminating unnecessary waves, etc., and can solve problems such as not providing sufficient beamformer distortion
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[0031] Preferred embodiments of the present invention will be described below, by way of example only.
[0032] In the following embodiments of the invention, techniques are described in which the input to the adaptive beamformer is directionally regularized during the adaptation of the beamformer filter coefficients. The embodiments described below relate to the case where the signal is an audio signal. However, other embodiments relate to the case where the signals are other types of transmission signals, such as generally wideband signals, generally narrowband signals, radar signals, sonar signals, antenna signals, radio waves or microwaves. An identical realization (i.e. a regularized signal) of noise of any particular spectral shape (which in a preferred embodiment could be, for example, white noise) is injected into a copy of the microphone input signal with the difference in signal delay between the microphone input signals (or delay pattern) is the same as the signal ...
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