TY - GEN
T1 - Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus
AU - Ozawa, Kenji
AU - Watanabe, Kanji
AU - Sakamoto, Shuichi
N1 - Funding Information:
Work supported by JSPS KAKENHI (JP19K04408).
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - This study aims to separate four sound sources in the same direction using a small array with four microphones. The outputs of these microphones were shifted to create a virtual focus. When these outputs are considered as a two-dimensional (2D) image, the sound from a focus point generates vertical stripes, and its 2D spectrum is concentrated on the spatial direct current bin. Based on this property, the spectra of the four sounds were estimated by solving a set of equations. Computer simulation experiments demonstrated that the four sounds were separated successfully with a signal-to-distortion ratio exceeding 20 dB.
AB - This study aims to separate four sound sources in the same direction using a small array with four microphones. The outputs of these microphones were shifted to create a virtual focus. When these outputs are considered as a two-dimensional (2D) image, the sound from a focus point generates vertical stripes, and its 2D spectrum is concentrated on the spatial direct current bin. Based on this property, the spectra of the four sounds were estimated by solving a set of equations. Computer simulation experiments demonstrated that the four sounds were separated successfully with a signal-to-distortion ratio exceeding 20 dB.
KW - instantaneous spectral estimation
KW - sound source separation
KW - spatio-temporal sound pressure distribution image
KW - virtual focus
UR - http://www.scopus.com/inward/record.url?scp=85123504128&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85123504128&partnerID=8YFLogxK
U2 - 10.1109/GCCE53005.2021.9621869
DO - 10.1109/GCCE53005.2021.9621869
M3 - Conference contribution
AN - SCOPUS:85123504128
T3 - 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021
SP - 520
EP - 521
BT - 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th IEEE Global Conference on Consumer Electronics, GCCE 2021
Y2 - 12 October 2021 through 15 October 2021
ER -