Bispectrum Estimation and Time Delay Calculation for Dual-Channel Signals

In this project, we will perform bispectrum estimation and calculate time delays for two signals using MATLAB. The implementation begins with loading signals through MATLAB's Signal Processing Toolbox, followed by essential preprocessing steps including noise reduction and filtering operations. We will then employ bispectrum estimation algorithms (such as the direct method or parametric approaches) to conduct spectral analysis, generating bispectral plots for each signal. The core analysis involves comparing these bispectral plots to identify time delay differences between signals, potentially using phase information from cross-bispectrum calculations. Finally, we will visualize the results using MATLAB's plotting functions (like surf or contour for 3D bispectrum displays) and time-delay analysis tools to clearly demonstrate signal timing characteristics. Key functions include bspecest for bispectrum estimation, xcorr for cross-correlation-based delay estimation, and various visualization functions from the DSP System Toolbox.