Shift Operator and Separation Filter for Different Period Mixed Signals Using Companion Matrix - Pei, Soo-Chang; Chang, Kuo-Wei (ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Acoustics, Speech and Signal Processing (ICASSP), ICASSP 2024 - 2024 IEEE International Conference on, 2024)