Kabushiki Kaisha Toshiba

Taro Masuda

Toru Taniguchi

Makoto Hirohata

According to one embodiment, a signal processing apparatus includes a memory and a processor electrically coupled to the memory. The processor separates a plurality of signals by a separation filter, and outputs a plurality of separate signals. The plurality of signals includes signals which are received at different positions and come from different directions. The processor estimates incoming directions of the plurality of separate signals, respectively, and associates the plurality of separate signals with transmission sources of the signals, and present association between the plurality of separate signals and the transmission sources of the signals.

Signal processing apparatus, signal processing method and audio association presentation apparatus

A signal processing system includes a filter unit, a conversion unit, a decomposition unit, and an estimation unit. The filter unit applies, to a plurality of time series input signals, N filters estimated by independent component analysis of the input signals to output N output signals. The conversion unit converts the output signals into nonnegative signals each taking on a nonnegative value. The decomposition unit decomposes the nonnegative signals into a spatial basis that includes nonnegative three-dimensional elements, that is, K first elements, N second elements, and I third elements, a spectral basis matrix of I rows and L columns that includes L nonnegative spectral basis vectors expressed by I-dimensional column vectors, and a nonnegative L-dimensional activity vector. The estimation unit estimates sound source signals representing signals of the signal sources based on the output signals using the spatial basis, the spectral basis matrix, and the activity vector.

Signal processing system, signal processing method, and computer program product

According to one embodiment, a signal processing apparatus includes a processer. The processor separates a plurality of signals, which are received at different positions and come from different directions, by a separation filter. The processor estimates incoming directions of a plurality of separate signals respectively, and associates the plurality of separate signals with transmission sources of the plurality of signals. The processor associates either one of a first attribute and a second attribute with the separate signals which are associated with the transmission sources of the signals based on results of the estimation of the incoming directions in a first period, and add either one of first label information and second label information.

Signal processing apparatus, signal processing method and labeling apparatus

According to one embodiment, a signal processing system senses and receives generated signals of a plurality of signal sources, estimates a separation filter based on the received signals of the sensor for each frame, separates the received signals based on the filter to obtain separated signals, computes a directional characteristics distribution for each of the separated signals, obtains a cumulative distribution indicating the directional characteristics distribution for each of the separated signals output in a previous frame, computes a similarity of the cumulative distribution to the directional characteristics distribution of the separated signals of a current frame, and connects to a signal selected from the separated signals based on the similarity.

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Kawasaki Kanagawa, Japan

Taro Masuda