Hi Sattwik,
In audio processing applications, the OperatingFrequency parameter in beamforming algorithms does not have a direct correspondence to carrier frequency used in electromagnetic signal applications. Instead, it represents the centre frequency of the audio signal or the frequency of interest for beamforming.
For audio processing, you can set the OperatingFrequency parameter to the center frequency of the audio band you are interested in. This frequency should be within the range of the audio signal you are processing. For your case, since the sampling frequency is 16000 Hz, so you should keep the operating frequency around 8000 Hz.
The “SubbandMVDRBeamformer()” is designed to work with audio signals and can be used for audio beamforming applications. It operates in the frequency domain by dividing the input signal into sub bands and applying the Minimum Variance Distortionless Response (MVDR) beamforming technique to each sub band.
On the other hand, the “FrostBeamformer()” is also suitable for audio processing and operates in the time domain. It uses the Frost beamforming algorithm, which is a popular choice for speech enhancement applications.
Both “SubbandMVDRBeamformer()” and “FrostBeamformer()” can be used for audio beamforming, but they differ in their implementation and performance characteristics. You can choose the one that best suits your specific requirements and experiment with both to see which one provides better results for your application.
