... voice activity detection algorithm for estimatingnoise spectrum. Electron. Lett. 36(2), 180–181 (2000)5. M Marzinzik, B Kollmeier, Speech pause detection for noise spectrum estimation by tracking ... denoted as αααs, αααn, and ααα with their kth elements αs,k, αn,k, and αk, re-spectively. Given two hypotheses H0 and H1, which indicate speech absence and presence, we assume thatH0: ... compact approximation ˆx is given by ˆx ≈Kk=1αkgγk(1)where K and {αk}k=1, ,Kdenote the order of decomposition and the expan-sion coefficients, respectively, and {gγk}k=1, ,Kare the...