TY - JOUR AU - Lewis, M; Crandell, C; Valente, M; Horn, J TI - Speech perception in noise: directional microphones versus frequency modulation (FM) systems JO - J Am Acad Audiol VL - 15 PY - 2004 DO - 10.3766/jaaa.15.6.4 L3 - PubMed-ID: 15341224 SP - 426 EP - 439 ER -