| Patent application number | Description | Published |
|---|
| 20080228470 | Signal separating device, signal separating method, and computer program - A signal separating device that is inputted with signals formed by mixing plural signals and separates the signals into individual signals includes a signal converting unit that converts input signals into signals in the time-frequency domain and generates observation spectrograms and a signal separating unit that generates separated results from the observation spectrograms generated by the signal converting unit. The signal separating unit interprets the observation spectrograms as observation signals subjected to convolutive mixtures in the time-frequency domain and generates separated results by executing processing for solving convolutive mixtures in the time-frequency domain. | 09-18-2008 |
| 20090310444 | Signal Processing Apparatus, Signal Processing Method, and Program - A signal processing apparatus includes: a learning processing unit that finds a separating matrix for separating mixed signals in which outputs from a plurality of sound sources are mixed, by a learning process that applies ICA (Independent Component Analysis) to observed signals including the mixed signals; a separation processing unit that applies the separating matrix to the observed signals to separate the mixed signals and generate separated signals corresponding to each of the sound sources; and a sound source direction estimating unit that computes a sound source direction of each of the generated separated signals. The sound source direction estimating unit calculates cross-covariance matrices between the observed signals and the separated signals in corresponding time segments in time-frequency domain, computes phase differences between elements of the cross-covariance matrices, and computes a sound source direction corresponding to each of the separated signals by applying the computed phase differences. | 12-17-2009 |
| 20100278357 | Signal processing apparatus, signal processing method, and program - A signal processing apparatus includes a source separation module for producing respective separation signals corresponding to a plurality of sound sources by applying an ICA (Independent Component Analysis) to observation signals produced based on mixture signals from the sound sources, which are taken by source separation microphones, to thereby execute a separation process of the mixture signals, and a signal projection-back module for receiving observation signals of projection-back target microphones and the separation signals produced by the source separation module, and for producing projection-back signals as respective separation signals corresponding to the sound sources, which are taken by the projection-back target microphones. The signal projection-back module produces the projection-back signals by receiving the observation signals of the projection-back target microphones which differ from the source separation microphones. | 11-04-2010 |
| 20110123046 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM THEREFOR - A signal processing apparatus includes: a separation processing unit that generates observed signals in the time frequency domain by performing the short-time Fourier transform on mixed signals as outputs, which are acquired from a plurality of sound sources by a plurality of sensors, and generates sound source separation results corresponding to the sound sources by a linear filtering process on the observed signals. The separation processing unit has a linear filtering process section that performs the linear filtering process on the observed signals so as to generate separated signals corresponding to the respective sound sources, an all-null spatial filtering section that applies an all-null spatial filter to generate signals filtered with the all-null spatial filter (spatially filtered signals) in which the acquired sounds in null directions are removed, and a frequency filtering section that performs a filtering process by inputting the separated signals and the spatially filtered signals. | 05-26-2011 |
| 20110125496 | SPEECH RECOGNITION DEVICE, SPEECH RECOGNITION METHOD, AND PROGRAM - A speech recognition device includes a sound source separation unit configured to separate a mixed signal of outputs of a plurality of sound sources into signals corresponding to individual sound sources and generate separation signals of a plurality of channels; a speech recognition unit configured to input the separation signals of the plurality of channels, the separation signals being generated by the sound source separation unit, perform a speech recognition process, generate a speech recognition result corresponding to each channel, and generate additional information serving as evaluation information on the speech recognition result corresponding to each channel; and a channel selection unit configured to input the speech recognition result and the additional information, calculate a score of the speech recognition result corresponding to each channel by applying the additional information, and select and output a speech recognition result having a high score. | 05-26-2011 |
| 20110261977 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM - A signal processing device includes a signal transform unit which generates observation signals in the time frequency domain, and an audio source separation unit which generates an audio source separation result, and the audio source separation unit includes a first-stage separation section which calculates separation matrices for separating mixtures included in the first frequency bin data set by a learning process in which Independent Component Analysis is applied to the first frequency bin data set, and acquires a first separation result for the first frequency bin data set, a second-stage separation section which acquires a second separation result for a second frequency bin data set by using a score function in which an envelope is used as a fixed one, and executing a learning process for calculating separation matrices for separating mixtures, and a synthesis section which generates the final separation results by integrating the first and the second separation results. | 10-27-2011 |
| Patent application number | Description | Published |
|---|
| 20090087537 | Emulsion Composition and Method of Preparing the Same - This invention provides a method of preparing emulsion compositions particularly emulsion foods, with excellent emulsifying activity, emulsion stability, heat resistance, and texture or mouthfeel. The method can be performed by carrying out a step (1) mixing pectin obtained by heating sugar beet pectin derived from sugar beet in powder form at a temperature of 50 to 150° C. at a relative humidity of 20 to 90% for 1 to 48 hours with raw materials for emulsion compositions; and a step (2) emulsifying the mixture obtained in the step (1), or, in place of step (1), (a) homogenizing a modified pectin in alternatively water systems; (b) mixing the water dispersions of the modified pectin obtained in step (a) with raw materials for emulsion compositions; and (c) emulsifying the mixture obtained in step (b). Thus, emulsion compositions can be prepared. | 04-02-2009 |
| 20090110799 | Method for modification of pectin and application thereof - This invention modifies pectin, and improves, by the use of the modified pectin, physical properties of a subject composition, such as dispersion stability, emulsifying activity/emulsion stability, water holding property (syneresis inhibiting property), texture, viscosity development property, and gelling property. Pectin is modified by heating a raw material pectin in the form of a powder at 50 to 150° C. for 1 minute to 48 hours. Preferably, as a raw material pectin to be heated, pectin whose loss upon drying is 20% (w/w) or lower is used. More preferably, the raw material pectin is heated at 50 to 150° C. for 1 minute to 48 hours at a relative humidity of 20 to 90% (w/w) and/or under a reduced pressure. | 04-30-2009 |
| Patent application number | Description | Published |
|---|
| 20110292153 | IMAGE FORMING APPARATUS - According to one embodiment, there is provided an image forming apparatus, including an accommodation unit, an image forming unit, an image reading unit, an image erasing unit, a first medium processing unit, and a second medium processing unit. The first medium processing unit forms the image on the recording medium carried from the accommodation unit and discharges the recording medium on which the image is formed, based on the setting of a first image process mode. The second medium processing unit forms a test image on the recording medium carried from the accommodation unit, reads the test image, erases the test image, and returns the recording medium to the accommodation unit, based on a setting of a second image process mode. | 12-01-2011 |
| 20110299867 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING THE IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes: a first paper feeding unit; a second paper feeding unit; a fixing unit configured to fix a developer image transferred onto a sheet; a conveying path configured to convey sheets; a receiving unit configured to receive an execution instruction for duplex printing for continuously printing an image on one surface and on the other surface of a sheet; an acquiring unit configured to acquire, in the printing on one surface, information concerning presence or absence of an image on the other surface; and a processor configured to change, in the printing on one surface, if a result of the acquisition concerning the sheet fed from the first paper feeding unit indicates that an image is present, a paper feeding unit from the first paper feeding unit to the second paper feeding unit and performs control for re-executing the duplex printing. | 12-08-2011 |
