emuxki_voice_new
struct emuxki_voice *emuxki_voice_new(struct emuxki_softc *, u_int8_t);
sc->rvoice = emuxki_voice_new(sc, 0 /* EMU_VOICE_USE_RECORD */);
sc->pvoice = emuxki_voice_new(sc, EMU_VOICE_USE_PLAY);