What is the meaning of 'operatingFrequency' parameter for SubbandMVDRbeamforming in the context when input signal is not modulated?
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I would like to appy SubbandMVDRBeamforming on audio signal. Si nce such signal is not modulated I have a problem hos to setup the operatingFrequency.
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Honglei Chen
on 20 Nov 2018
Currently SubbandMVDRBeamformer assumes the signal is modulated so it performs narrowband MVDR in each subband. If the signal is not modulated, like in audio, I think a better fit is phased.FrostBeamformer. The underlying principle of a Frost beamformer is simialr to MVDR beamformer but the implementation is in time domain instead.
HTH
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Honglei Chen
on 20 Nov 2018
You could try to use phased.WidebandCollector to simulate either modulated or unmodulated received signal at the array. This wil work if you have a single audio clip as the source. If you already have the measurement at each receiving element, then the function above won't work.
HTH
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