TY - JOUR
T1 - Audio signal separation through complex tensor factorization
T2 - Utilizing modulation frequency and phase information
AU - Masaya, Shogo
PY - 2018
Y1 - 2018
N2 - I propose a complex-valued tensor factorization algorithm for audio-source separation to exploit not only amplitude but phase information of audio signals in the modulation frequency (MF) domain. The proposed algorithm is extended from complex non-negative matrix factorization, which is capable of decomposing an arbitrary complex matrix such as the complex spectrum in the acoustic frequency domain. The proposed method enables us to factorize an arbitrary complex tensor of order 3. The detailed performance of the proposed algorithm for single-channel source separation is investigated through numerical experiments. I examine the quantitative contributions of the MF domain and phase information examined by additionally presenting three tensor factorization algorithms and using five objective indices for source separation.
AB - I propose a complex-valued tensor factorization algorithm for audio-source separation to exploit not only amplitude but phase information of audio signals in the modulation frequency (MF) domain. The proposed algorithm is extended from complex non-negative matrix factorization, which is capable of decomposing an arbitrary complex matrix such as the complex spectrum in the acoustic frequency domain. The proposed method enables us to factorize an arbitrary complex tensor of order 3. The detailed performance of the proposed algorithm for single-channel source separation is investigated through numerical experiments. I examine the quantitative contributions of the MF domain and phase information examined by additionally presenting three tensor factorization algorithms and using five objective indices for source separation.
KW - Audio-source separation
KW - Complex non-negative matrix factorization
KW - Modulation frequency domain
KW - Phase
KW - Tensor factorization
UR - http://www.scopus.com/inward/record.url?scp=85025073693&partnerID=8YFLogxK
U2 - 10.1016/j.sigpro.2017.07.013
DO - 10.1016/j.sigpro.2017.07.013
M3 - Article
AN - SCOPUS:85025073693
SN - 0165-1684
VL - 142
SP - 137
EP - 148
JO - Signal Processing
JF - Signal Processing
ER -