Explore MATLAB source code curated for "麦克风阵列" with clean implementations, documentation, and examples.
Simulation of TLS adaptive beamforming algorithm for microphone arrays with adjustable microphone spacing and input signal bandwidth, achieving desired output through parameter configuration and signal processing implementation
Frequency-invariant beamforming (FIB) plays a crucial role in distortion-free acquisition and processing of speech signals using microphone arrays. While classical FIB design methods typically operate under far-field plane wave assumptions, this paper introduces a novel approach based on the near-field spherical wave model. We integrate the spatial response variation (SRV) function into near-field Linear Constrained Minimum Variance (LCMV) broadband beamforming, formulating the spatial response as an optimization constraint and deriving a closed-form solution via Lagrange multipliers. The implementation involves calculating frequency-invariant weight vectors through matrix inversion operations, with key computational steps including covariance matrix estimation and constraint matrix construction. This method enhances robustness against environmental interference compared to conventional approaches.
Implementation of time delay estimation using cross-correlation functions for acoustic source localization algorithms, with enhanced code-level performance optimizations