Harris Knudsen, acoustic design expert, standing, mature male, 50yo, glasses, short brown hair, beard, formal attire, suit, tie, holding a sound level meter, in front of a sleek, modern concert hall, wooden panels, soundproofing materials, complex ceiling structure, tiered seating, spotlights, warm ambient lighting, evening atmosphere, shallow depth of field, 3/4 composition, natural textures, reflective surfaces.