improve SNR robustness and cut-off logic
improve SNR robustness and cut-off logic

pcqpcq/sox,mhartzel/sox_personal_fork,MageSlayer/sox,cbagwell/sox,jacksonh/sox,Distrotech/sox,CaptainHayashi/sox,jacksonh/sox,uklauer/sox,jacksonh/sox,pcqpcq/sox,Distrotech/sox,Distrotech/sox,mhartzel/sox_personal_fork,MageSlayer/sox,Motiejus/sox,cbagwell/sox,pcqpcq/sox,cbagwell/sox,CaptainHayashi/sox,davel/sox,uklauer/sox,MageSlayer/sox,Distrotech/sox,Motiejus/sox,jacksonh/sox,Motiejus/sox,MageSlayer/sox,CaptainHayashi/sox,uklauer/sox,MageSlayer/sox,Motiejus/sox,CaptainHayashi/sox,mhartzel/sox_personal_fork,davel/sox,cbagwell/sox,davel/sox,davel/sox,uklauer/sox,mhartzel/sox_personal_fork,pcqpcq/sox