This function is only in Prosody version 1 (but see the conversion guide for further details, including a facility that emulates it).
int sm_conf_primix_leave(struct sm_conf_primix_leave_parms *confixp)
typedef struct sm_conf_primix_leave_parms {
tSM_INT channel_ix; /* in */
tSM_INT id; /* in */
} SM_CONF_PRIMIX_LEAVE_PARMS;
This is same as sm_conf_prim_leave() except it specifies the channel using a channel index.
This function is part of the Prosody speech processing API.