Spectro-temporal masking of sine sweep signal for room transfer function measurement in noisy environments

A room transfer function (RTF) is used for many purposes, especially to compose an optimal sound environment and listening conditions in a building. Sine sweep signals are widely employed to measure RTF. In real situations, however, it is often difficult to achieve high-quality RTF because the measured signals are contaminated with background noise. This paper proposes a spectro-temporal masking method that eliminates noise from measured noisy sine sweep signals. From the simulation results, it is evident that the proposed method will enhance the accuracy of RTF measurements compared with the conventional methods such as spectral subtraction.