A Study on Complexity Reduction of Binaural Decoding in Multi-channel Audio Coding for Realistic Audio Service

In this paper, we proposed the simplified binaural decoding method for reducing the complexity of the binaural decoding. In the proposed simplified binaural decoding the high frequency components of the HRTF (head related transfer function) coefficients are excluded and the binaural decoding process in the high frequency regions is simplified. From the experimental results, it is confirmed that the proposed method greatly reduces the complexity of the binaural decoding in the frequency domain as 40 % and shows the statistically same sound quality compared to the binaural decoding in the frequency domain.