At low frequencies the listening environment has a significant impact on the sound quality of the audio system. Standing waves within the room cause large frequency response variations at the listening location. Furthermore, the frequency response changes significantly from one listening location to another; therefore, the system cannot be effectively equalized. A novel method to reduce seat-to-seat frequency response variation is described that allows the system to be equalized over a large listening area using relatively simple signal processing.
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https://aes2.org/publications/elibrary-page/?id=12417
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