公开(公告)号：US20210152936A1

公开(公告)日：2021-05-20

申请号：US17047514

申请日：2019-04-11

申请人： The University of Electro-Communications ,  Hibino Corporation

发明人： Kota TAKAHASHI ,  Tsukasa MIYAMOTO ,  Yoshiyuki ONO ,  Yoji ABE

IPC分类号： H04R3/04 ,  G10L25/18

摘要： An information processing device includes a first time-frequency converter configured to perform a time-frequency conversion with respect to an input signal, using a window function having a first width, a second time-frequency converter configured to perform a time-frequency conversion with respect to the input signal, using a second window function having a second width smaller than the first width, and a modification processing unit configured to modify an output of the second time-frequency converter, using a frequency analysis result based on an output of the first time-frequency converter.

公开(公告)号：US20210151068A1

公开(公告)日：2021-05-20

申请号：US17047524

申请日：2019-04-11

申请人： The University of Electro-Communications ,  Hibino Corporation

发明人： Kota TAKAHASHI ,  Tsukasa MIYAMOTO ,  Yoshiyuki ONO ,  Yoji ABE

IPC分类号： G10L21/0332 ,  H04R3/00 ,  H04S3/00

摘要： A mixing apparatus having a stereo output includes: a first signal processor that mixes a first signal and a second signal in a first channel; a second signal processor that mixes a third signal and a fourth signal in a second channel; a third channel that processes a weighted sum of a signal of the first channel and a signal of the second channel; and a gain deriving part that generates a gain mask commonly used in the first channel and the second channel, wherein the gain deriving part determines a first gain commonly applied to the first signal and the third signal, and a second gain commonly applied to the second signal and the fourth signal, so that predetermined conditions for simultaneous gain generation are satisfied at least at the first channel and the second channel among the first channel, the second channel, and the third channel.

公开(公告)号：US20210151067A1

公开(公告)日：2021-05-20

申请号：US17047504

申请日：2019-04-11

申请人： The University of Electro-Communications ,  Hibino Corporation

发明人： Kota TAKAHASHI ,  Tsukasa MIYAMOTO ,  Yoshiyuki ONO ,  Yoji ABE ,  Hiroshi INOUE

IPC分类号： G10L21/0332 ,  G10L21/0364 ,  H04R3/00 ,  H04S1/00 ,  H04R25/00

摘要： A mixing technique is provided that can suppress degradation of non-priority sound and output more natural mixed sound, regardless of the size and quality of a playback device.
A mixing device of a first signal and a second signal on a time-frequency plane, includes a control signal generation unit configured to generate a control signal indicating whether to perform prioritized mixing that includes amplification of the first signal and attenuation of the second signal; and a gain derivation unit configured to derive a first gain for amplifying the first signal and a second gain for attenuating the second signal based on the control signal, wherein the control signal takes at least a first value and a second value different from the first value, wherein the first value is not continuous beyond a predetermined bandwidth on a frequency axis, and wherein the mixing device applies the prioritized mixing to the first signal and the second signal in response to the control signal indicating the first value, and applies simple addition to the first signal and the second signal in response to the control signal indicating the second value.