Index for 2aAA

• 2aAA1. Sound absorption by seats in concert halls, occupied and unoccupied, and average sound absorption by the interior surfaces of halls.
• 2aAA2. Sound absorption of occupied chairs as a function of chair design and audience clothing.
• 2aAA3. An overview of the acoustical effects of an audience.
• 2aAA4. Under-seat sound absorption for stadium/arena chairs.
• 2aAA5. The resonator system of controlling the reverberation time in an existing hall.
• 2aAA6. Examination of a resonator system for sound power absorption by hall chairs in the low-frequency range.
• 2aAA7. Partially coupled chambers in auditorium design.