Recreating acoustics

Abstract

Acoustics can have a great effect on our audio experience. Concert halls and opera houses have for many years been designed specially around acoustic resonance. The main goal of this project was to recreate the acoustics of a room by acquiring its impulse response and making a filter. In this project, an ambisonics system was made with 30 speakers and channels for multitrack. A circular listening pattern was designed for the ambisonics system. Five impulse response filters were made with three different design methods. The filters were tested and analyzed. The filters were applied to an instrumental audio track. That same instrumental audio track was played inside the room in which the impulse response was acquired and recorded with the same equipment as the impulse response was recorded. The filtered instrumental audio tracks were tested for correlation with the recorded audio track. The unfiltered original instrumental audio track was also tested for correlation with the recorded audio track. The results of these tests were compared to find the best filter and to analyze if the methods show more similarity to the recorded audio track after being filtered with the impulse response filters.