Effect of Using Acoustic Panels in Eliminating Backing Track Leaks with Reverse Phase

Abstract

In order to eliminate backing track signal leaks that occur when monitor speakers are used instead of headphones in recordings of crowded instrumental or vocal ensembles, methods that dampen backing track leaks by applying destructive interference with reverse phase can be used. In one of these methods, two recordings are taken for each performance. In the first recording and the second recording, the musical background is pipe through the speakers to the studio environment. In the first recording, the performers do not perform any performances. In the second recording, the performers perform. When the phase of one of these two resulting records is reversed, the substructure leaks, which are largely identical in both channels, dampen each other by destructive interference. Than the performance of the performers present in only one of the recordings is largely isolated from backing track leaks. It has been observed that methods working with this technique are less successful in damping backing track leaks, especially in the mid to high frequencies. In this study, improvements were investigated to dampen these leaks, which are more affected by objects in the environment. In this study, whether the body movements of the performers are among the factors that reduce the success rate in damping the backing track leaks, and if so, to what extent they are effective, were measured. Than a method proposal based on the use of an isolation panel positioned in an effective position to reduce the negative effects of performers' body movements was presented, and the contributions of this method proposal. It has been determined that the right-sized isolation panel positioned at the right point can significantly prevent the changes due to the body movements of the performers.