Beamforming for Broadband Microphone Arrays

This algorithm implements beamforming for broadband microphone arrays, utilizing frequency-domain Discrete Fourier Transform (DFT) processing and time-domain Finite Impulse Response (FIR) beamformers to achieve directional sound enhancement. The implementation typically involves converting microphone array signals to the frequency domain using DFT, applying phase adjustments for steering directions, and converting back to time domain through inverse DFT. The FIR beamformer component employs tap-delay line structures with optimized filter coefficients to control beam patterns and frequency responses. By leveraging multiple microphones in the array, this approach enables focused enhancement of sound signals from specific directions while suppressing interference and noise. This beamforming methodology proves particularly valuable in applications such as speech recognition systems, conference room audio enhancement, and wireless communication systems where directional signal processing is critical. The algorithm can be implemented using signal processing libraries with functions for FFT computation, filter design, and real-time audio processing.