sc_sil_start     1918 dev/audio.c    		s = sc->sc_sil_start; /* start of silence */
sc_sil_start     1944 dev/audio.c    		sc->sc_sil_start = inp;
sc_sil_start      118 dev/audiovar.h 	u_char	*sc_sil_start;	/* start of silence in buffer */