Patent application number | Description | Published |
20080199152 | Sound processing apparatus, sound processing method and program - A sound processing apparatus includes a sound determination portion operable to determine whether an input sound includes a first sound emitted from a particular source based on location information of the source, a sound separation portion operable to separate the input sound into the first sound and a second sound emitted from a source different from the particular source if the sound determination portion determines that the input sound includes the first sound, and a sound mixing portion operable to mix the first sound and the second sound separated by the sound separation portion at a prescribed volume ratio. | 08-21-2008 |
20090074204 | Information processing apparatus, information processing method, and program - According to the present invention, a parameter adjustment section setting, in accordance with a first parameter indicating a variant factor for playback speed that is input, a second parameter and a third parameter, and a signal processing section adjusting at least one of playback speed and pitch of a sound of an audio signal based on the second parameter and the third parameter are provided, wherein the signal processing section adjusts the playback speed of the audio signal when the variant factor for playback speed that is input is less than a predetermined threshold and adjusts the playback speed and the pitch of a sound of the audio signal when the variant factor for playback speed that is input is above the predetermined threshold. | 03-19-2009 |
20100111290 | Call Voice Processing Apparatus, Call Voice Processing Method and Program - There is provided a call voice processing apparatus including an input correction unit that corrects characteristics of a first input sound input from a first input apparatus to characteristics of a second input sound input from a second input apparatus, a sound separation unit that separates the second input sound into a plurality of sounds, a sound type estimation unit that estimates sound types of the plurality of sounds separated by the sound separation unit, a mixing ratio calculation unit that calculates a mixing ratio of each sound in accordance with the sound type estimated by the sound type estimation unit, a sound mixing unit that mixes the plurality of sounds separated by the sound separation unit in the mixing ratio calculated by the mixing ratio calculation unit, and an extraction unit that extracts a specific sound from the first input sound corrected by the input correction unit. | 05-06-2010 |
20100111313 | Sound Processing Apparatus, Sound Processing Method and Program - There is provided a sound processing apparatus including a sound separation unit that separates an input sound into a plurality of sounds caused by a plurality of sound sources, a sound type estimation unit that estimates sound types of the plurality of sounds separated by the sound separation unit, a mixing ratio calculation unit that calculates a mixing ratio of each sound in accordance with the sound type estimated by the sound type estimation unit, and a sound mixing unit that mixes the plurality of sounds separated by the sound separation unit in the mixing ratio calculated by the mixing ratio calculation unit. | 05-06-2010 |
20110022361 | SOUND PROCESSING DEVICE, SOUND PROCESSING METHOD, AND PROGRAM - A sound processing device includes: a nonlinear processing unit that outputs a plurality of sound signals including sound sources existing in predetermined areas by performing a nonlinear process for a plurality of observed signals that are generated by a plurality of sound sources and are observed by a plurality of sensors; a signal selecting unit that selects a sound signal including a specific sound source from among the plurality of sound signals output by the nonlinear processing unit and the observed signal including the plurality of sound sources; and a sound separating unit that separates a sound signal including the specific sound source that is selected by the signal selecting unit from the observed signal selected by the signal selecting unit. | 01-27-2011 |
20110228951 | SOUND PROCESSING APPARATUS, SOUND PROCESSING METHOD, AND PROGRAM - A sound processing apparatus includes a target sound emphasizing unit configured to acquire a sound frequency component by emphasizing target sound in input sound in which the target sound and noise are included, a target sound suppressing unit configured to acquire a noise frequency component by suppressing the target sound in the input sound, a gain computing unit configured to compute a gain value to be multiplied by the sound frequency component using a gain function that provides a gain value and has a slope that are less than predetermined values when an energy ratio of the sound frequency component to the noise frequency component is less than or equal to a predetermined value, and a gain multiplier unit configured to multiply the sound frequency component by the gain value computed by the gain computing unit. | 09-22-2011 |
20110231187 | VOICE PROCESSING DEVICE, VOICE PROCESSING METHOD AND PROGRAM - A voice processing device includes a zone detection unit which detects a voice zone including a voice signal or a non-steady sound zone including a non-steady signal other than the voice signal from an input signal and a filter calculation unit that calculates a filter coefficient for holding the voice signal in the voice zone and for suppressing the non-steady signal in the non-steady sound zone according to the detection result by the zone detection unit, in which the filter calculation unit calculates the filter coefficient by using a filter coefficient calculated in the non-steady sound zone for the voice zone and using a filter coefficient calculated in the voice zone for the non-steady sound zone. | 09-22-2011 |
20110255005 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD AND PROGRAM - An information processing device includes a change point detection unit which detects change points of a moving image, a transition detection unit which detects transition of a subject, a composition similarity degree information generation unit which generates composition similarity degree information, based on feature amounts of the compositions of the images configuring the moving image included between the change points, a voice similarity degree information generation unit which generates voice similarity degree information, based on a feature amount of the voice data associated with the moving image included between the change points, and a determination unit which determines whether or not the moving image included between the change points is a moving image corresponding to the specific scene, based on the detected transition, the generated composition similarity degree information and the generated voice similarity degree information. | 10-20-2011 |
20110255710 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM - A signal processing apparatus includes an absolute value unit configured to convert an audio signal into absolute values, a representative value calculation unit configured to calculate representative values of consecutive sample values included in blocks of the audio signal which has been converted into the absolute values using at least maximum sample values among values of the samples included in the blocks for individual blocks, an average value calculation unit configured to determine a section which includes a predetermined number of consecutive blocks as a frame and calculate a maximum value of the representative values of the blocks included in the frame and an average value of the representative values of the blocks included in the frame, and a detector configured to detect click noise in the frame on the basis of a ratio of the maximum value to the average value. | 10-20-2011 |
20110274411 | INFORMATION PROCESSING DEVICE AND METHOD, AND PROGRAM - An information processing device for analyzing motion and color of an image of a program and detecting shot sound and cheering of golf includes an extraction unit that extracts a notable interval which is a notable time interval of the program based on the motion of the image, a computation unit that computes a play scene level indicating a degree to which the notable interval is a play scene of the golf based on the motion, color and shot sound of the notable interval extracted by the extraction unit, and a determination unit that determines whether or not the notable interval is a play scene of the golf based on the play scene level computed by the computation unit. | 11-10-2011 |
20110293176 | DETECTION APPARATUS, DETECTION METHOD, AND COMPUTER PROGRAM - An apparatus for detecting a cut change based on a similarity between a first image and a second image, includes a unit for generating one of a luminance histogram and a color histogram of each of the first image and the second image, a unit for generating a spatial correlation image representing a correlation between spatial layouts of the first image and the second image, a unit for calculating a histogram similarity representing a similarity between the histogram of the first image and the histogram of the second image, a unit for calculating a spatial correlation image similarity representing a similarity between the spatial correlation image of the first image and the spatial correlation image of the second image, and a unit for determining whether a border between the first image and the second image is a cut change based on the histogram similarity and the spatial correlation image similarity. | 12-01-2011 |
20120026345 | MECHANICAL NOISE SUPPRESSION APPARATUS, MECHANICAL NOISE SUPPRESSION METHOD, PROGRAM AND IMAGING APPARATUS - A mechanical noise suppression apparatus includes: a framing section adapted to divide an input signal into frames of a predetermined time length; a Fourier transform section adapted to transform framed signals obtained by the framing section into a frequency spectrum of a frequency domain; a mechanical noise reduction section adapted to correct the frequency spectrum of the input signal obtained by the Fourier transform section based on frequency spectrum information of mechanical noise to suppress the mechanical noise; an inverse Fourier transform section adapted to return the frequency spectrum corrected by the mechanical noise reduction section into framed signals of a time domain; and a frame synthesis section adapted to carry out frame synthesis of the framed signals of frames obtained by the inverse Fourier transform section to obtain an output signal in which the mechanical noise is suppressed. | 02-02-2012 |
20120057722 | NOISE REMOVING APPARATUS AND NOISE REMOVING METHOD - Disclosed herein is a noise removing apparatus, including: an object sound emphasis section adapted to carry out an object sound emphasis process for observation signals of first and second microphones to produce an object sound estimation signal; a noise estimation section adapted to carry out a noise estimation process for the observation signals to produce a noise estimation signal; a post filtering section adapted to remove noise components remaining in the object sound estimation signal using the noise estimation signal; a correction coefficient calculation section adapted to calculate, for each frequency, a correction coefficient for correcting the post filtering process based on the object sound estimation signal and the noise estimation signal; and a correction coefficient changing section adapted to change those of the correction coefficients which belong to a frequency band suffering from spatial aliasing such that a peak appearing at a particular frequency is suppressed. | 03-08-2012 |
20120103166 | Signal Processing Device, Signal Processing Method, and Program - A signal processing device that identifies a piece of music of an input signal by comparing the input signal with a plurality of reference signals including only a piece of music includes a weight distribution generating section that generates a weight distribution corresponding to a likeness to music in regions of the input signal transformed into a time-frequency domain, and a similarity calculating section that calculates degrees of similarity between a feature quantity in the regions of the input signal transformed into the time-frequency domain and feature quantities in the regions of the reference signals transformed into the time-frequency domain on the basis of the weighting based on the weight distribution. | 05-03-2012 |
20120150054 | RESPIRATORY CONDITION ANALYSIS APPARATUS, RESPIRATORY CONDITION DISPLAY APPARATUS, PROCESSING METHOD THEREIN, AND PROGRAM - A respiratory condition analysis apparatus includes a respiratory signal acquisition section configured to acquire a time-series respiratory signal including respiratory sound of a living body, a respiratory segment identification section configured to identify a respiratory segment that is a time segment including the respiratory sound in the respiratory signal, a feature value generation section configured to generate a predetermined feature value of the respiratory signal for the identified respiratory segment, and a respiratory abnormality degree generation section configured to generate a degree of abnormality of the respiratory sound included in the respiratory signal on the basis of the feature value. | 06-14-2012 |
20120157857 | RESPIRATORY SIGNAL PROCESSING APPARATUS, RESPIRATORY SIGNAL PROCESSING METHOD, AND PROGRAM - A respiratory signal processing apparatus includes a pulse-based component detection unit configured to detect a pulse-based component from a first signal acquired from a living being, and a pulse-based component removal unit configured to remove the detected pulse-based component from a second signal acquired from the living being, the second signal including respiratory sounds. | 06-21-2012 |
20120162471 | AUDIO SIGNAL PROCESSING DEVICE, AUDIO SIGNAL PROCESSING METHOD, AND PROGRAM - An audio signal processing device includes a first microphone configured to pick up audio and output a first audio signal; a second microphone configured to pick up the audio and output a second audio signal; a first frequency converter configured to convert the first audio signal to a first audio spectrum signal; a second frequency converter configured to convert the second audio signal to a second audio spectrum signal; an operating sound estimating unit configured to estimate, based on the correlation between a sound emitting member that emits an operating sound and the first and second microphones, an operating sound spectrum signal indicating the operating sound, by calculating the first and second audio spectrum signals; and an operating sound reducing unit configured to reduce the estimated operating sound spectrum signal from the first and second audio spectrum signals. | 06-28-2012 |
20120197420 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND PROGRAM - A signal processing device includes a sound collecting unit configured to collect sound, a covering detecting unit configured to detect a covered state of the sound collecting unit on the basis of a resonance frequency and a magnitude of a component of the resonance frequency in a frequency characteristic of an acoustic signal obtained through sound collection performed by the sound collecting unit, and an apparatus control determining unit configured to determine a type of control to be performed on a target apparatus in accordance with the covered state of the sound collecting unit detected by the covering detecting unit. | 08-02-2012 |
20120238908 | MASTICATION DETECTION DEVICE AND MASTICATION DETECTION METHOD - An information processing apparatus and method provide logic for processing information. In one implementation, an information processing apparatus may include a receiving unit configured to receive an audio signal associated with a motion of a human mandible over a time period. The information processing apparatus may also include a determination unit configured to determine whether the motion of the human mandible corresponds to mastication, based on at least a power of the received audio signal during the time period. | 09-20-2012 |
20120266742 | MUSIC SECTION DETECTING APPARATUS AND METHOD, PROGRAM, RECORDING MEDIUM, AND MUSIC SIGNAL DETECTING APPARATUS - An index calculating unit calculates a tonality index of a signal component of each area of an input signal transformed into a time frequency domain based on intensity (for example, power spectrum) of the signal component and a function (quadratic function) obtained by approximating the intensity of the signal component. A music determining unit determines whether or not each area of the input signal includes music based on the tonality index. The present technology can be applied to a music section detecting apparatus that detects a music part from an input signal in which music is mixed with noise. | 10-25-2012 |
20120266743 | MUSIC SEARCH APPARATUS AND METHOD, PROGRAM, AND RECORDING MEDIUM - An index calculating unit calculates a tonality index of a signal component of each area of the input signal transformed into a time frequency domain based on intensity of the signal component and a function obtained by approximating the intensity of the signal component. A similarity calculating unit calculates a similarity between a feature quantity in each area of the input signal obtained based on the index and the feature quantity in each area of the reference signal obtained based on the index calculated on the reference signal transformed into the time frequency domain. A music identifying unit identifies music of the input signal based on the similarity. The present technology can be applied to a music search apparatus that identifies music from an input signal. | 10-25-2012 |
20130182857 | SOUND PROCESSING APPARATUS, SOUND PROCESSING METHOD AND PROGRAM - A sound processing apparatus includes a sound determination portion operable to determine whether an input sound includes a first sound emitted from a particular source based on location information of the source, a sound separation portion operable to separate the input sound into the first sound and a second sound emitted from a source different from the particular source if the sound determination portion determines that the input sound includes the first sound, and a sound mixing portion operable to mix the first sound and the second sound separated by the sound separation portion at a prescribed volume ratio. | 07-18-2013 |
20130255473 | TONAL COMPONENT DETECTION METHOD, TONAL COMPONENT DETECTION APPARATUS, AND PROGRAM - There is provided a tonal component detection method including performing a time-frequency transformation on an input time signal to obtain a time-frequency distribution, detecting a peak in a frequency direction at a time frame of the time-frequency distribution, fitting a tone model in a neighboring region of the detected peak, and obtaining a score indicating tonal component likeness of the detected peak based on a result obtained by the fitting. | 10-03-2013 |
20140122064 | SIGNAL PROCESSING DEVICE AND METHOD, AND PROGRAM - There is provided a signal processing device including a feature amount extraction unit configured to extract, from a frequency-domain signal obtained by frequency conversion on a voice signal, a feature amount of the frequency-domain signal, and a determination unit configured to determine, based on the extracted feature amount, presence or absence of noise in the voice signal within a predetermined section. The feature amount is composed of a plurality of elements. The plurality of elements contain an element defined based on a correlation value between a feature amount waveform which is a waveform according to the frequency-domain signal in the voice signal within the predetermined section and a feature amount waveform within another section sequential in time to the predetermined section. | 05-01-2014 |
20140140519 | SOUND PROCESSING DEVICE, SOUND PROCESSING METHOD, AND PROGRAM - There is provided a sound processing device including an input signal processing unit configured to calculate a first acoustic feature quantity indicating a likelihood being of a sinusoidal wave of a signal in each time frequency domain and a second acoustic feature quantity different from the first acoustic feature quantity based on an input signal of content to be identified, a reference signal processing unit configured to calculate the first acoustic feature quantity and the second acoustic feature quantity based on a reference signal of content prepared in advance, and a matching processing unit configured to calculate a similarity between the input signal and the reference signal based on the first and second acoustic feature quantities of the input signal and the first and second acoustic feature quantities of the reference signal. | 05-22-2014 |
20140169581 | AUDIO SIGNAL PROCESSING DEVICE, IMAGING DEVICE, AUDIO SIGNAL PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM - There is provided an audio signal processing device including a feature amount extraction unit configured to extract, from an audio signal obtained by a sound collection unit, a feature amount that indicates a pulsed operation sound generated from a sound generation unit provided in a same housing as the sound collection unit, and a noise determination unit configured to determine whether or not the operation sound is included in the audio signal based on the feature amount. | 06-19-2014 |
20140303521 | ELECTRONIC DEVICE - To easily perform replacement of a fixing member for fixing an object on a skin of a human body. | 10-09-2014 |
20150043737 | SOUND DETECTING APPARATUS, SOUND DETECTING METHOD, SOUND FEATURE VALUE DETECTING APPARATUS, SOUND FEATURE VALUE DETECTING METHOD, SOUND SECTION DETECTING APPARATUS, SOUND SECTION DETECTING METHOD, AND PROGRAM - There is provided a sound detecting apparatus including: a feature value extracting unit which extracts a feature value per every predetermined time from an input time signal; a feature value maintaining unit which maintains a feature value sequence of a predetermined number of detection target sound items; and a comparison unit which respectively compares a feature value sequence extracted by the feature value extracting unit with a feature value sequence of the maintained predetermined number of detecting target sound items and obtains detection results of the predetermined number of detection target sound items every time the feature value extracting unit newly extracts a feature value, wherein the feature value extracting unit includes a time frequency transform unit and a likelihood distribution detecting unit, smooths the obtained likelihood distribution in frequency and time directions, and extracts a feature value per the predetermined time. | 02-12-2015 |
20150046103 | OPERATIONAL STATE ESTIMATING APPARATUS FOR ELECTRICAL DEVICE, OPERATIONAL STATE ESTIMATING METHOD FOR ELECTRICAL DEVICE, PROGRAM, FEATURE VECTOR REGISTERING APPARATUS FOR ELECTRICAL DEVICE, FEATURE VECTOR REGISTERING METHOD FOR ELECTRICAL DEVICE, SERVER DEVICE, AND OPERATIONAL STATE ESTIMATING SYSTEM FOR ELECTRICAL DEVICE - Estimating operational states of a plurality of electrical devices connected to an electrical power line, that is, an electricity usage condition is appropriately carried out. | 02-12-2015 |