Abstract: A noise suppressing device receives sound signals through a plurality of sound-receiving units and suppresses noise components included in the input sound signals. The noise suppressing device includes a detecting unit which detects a usage pattern of the noise suppressing device from a plurality of usage patterns in which positional relationships of the plurality of sound-receiving units and/or positional relationships between the plurality of sound-receiving units and a target sound source are different from each other, a converting unit which converts using environment information used in a noise suppressing process to each of the sound signals inputted by the plurality of sound-receiving units into using environment information in accordance with a usage pattern detected by the detecting unit and a suppressing unit which performs the noise suppressing process using the using environment information converted by the converting unit to the sound signals.

Abstract: A text-dependent voice authentication system that performs authentication by urging a user to input a keyword by voice includes: an input part (11) that receives a voice input of a keyword divided into a plurality of portions with an utterable unit being a minimum unit over a plurality of times at a time interval for each of the portions; registered speaker-specific syllable model DB (20) that previously stores a registered keyword of a user as a speaker model created in the utterable unit; a feature value conversion part (12) that obtains a feature value of a voice contained in a portion of the keyword received by each voice input in the input part (11) from the portion; a similarity calculation part (13) that obtains a similarity between the feature value and the speaker model; a keyword checking part (17) that determines whether or not voice inputs of all the syllables or phonemes configuring an entire registered keyword by the plurality of times of voice inputs, based on the similarity obtained in the sim

Abstract: There is provided a noise suppressing device, for suppressing a noise component contained in a sound, including: at least two sound receiving parts receiving sounds from a plurality of directions containing a sound from a direction of a given sound source and converting the sounds to digital sound signals in a time domain, respectively; an estimating part acquiring both direction information on a direction of the given sound source and distance information on a distance from the given sound source based upon the digital sound signals converted by the sound receiving parts, and estimating a component value of a noise component contained in the signal by use of the direction information and the distance information; and a controlling part acquiring a control value of a suppression amount for controlling a range of a direction of the digital sound signals.

Abstract: There is provided a sound processing apparatus for processing received sounds. A plurality of sound receiving units which are included in the apparatus output individually a sound signal corresponding to a received sound, then the sound signals in a time domain are converted into respective converted signal in a frequency domain, and a spectral ratio between the two converted signals is calculated for driving a phase correction value which corrects a phase of the sound signal.

Abstract: A pipe connecting structure which can prevent electrical charge of a plastic coated metal pipe using a simple structure. The structure includes beads 5a, 5b, 5c protruding from the outer surface of the end of a plastic coated metal tube 3, which is obtained by coating the outside of a bare metal pipe 1 with a nonconductive plastic film 2. The plastic film 2 is removed from the tip of the bead 5a to expose the circumferential surface of the bare metal pipe 1, the exposed portion is made to contact the inner surface of a conductive tube 4, and the plastic coated metal tube 3 and the conductive tube 4 are connected together.

Abstract: A sound determination apparatus receives acoustic signals by a plurality of sound receiving units, and generates frames having a predetermined time length. The sound determination apparatus performs FFT on the acoustic signals in frame units, and converts the acoustic signals to a phase spectrum and amplitude spectrum, which are signals on a frequency axis, then calculates the difference at each frequency between the respective acoustic signals as a phase difference, and selects frequencies to be the target of processing. The sound determination apparatus calculates the percentage of frequencies at which the absolute values of the phase differences of the selected frequencies are equal to or greater than a first threshold value, and determines that the acoustic signal coming from the nearest sound source is included in the frame when the calculated percentage is equal to or less than a second threshold value.

Abstract: A text-dependent voice authentication system that performs authentication by urging a user to input a keyword by voice includes: an input part (11) that receives a voice input of a keyword divided into a plurality of portions with an utterable unit being a minimum unit over a plurality of times at a time interval for each of the portions; registered speaker-specific syllable model DB (20) that previously stores a registered keyword of a user as a speaker model created in the utterable unit; a feature value conversion part (12) that obtains a feature value of a voice contained in a portion of the keyword received by the first voice input in the input part (11) from the portion; a similarity calculation part (13) that obtains a similarity between the feature value and the speaker model; a keyword checking part (17) that determines whether or not voice inputs of all the syllables or phonemes configuring an entire registered keyword by the plurality of times of voice inputs, based on the similarity obtained in th

Abstract: A speech recognition apparatus predicts, based on the occurrence cycle and duration time of impulse noise that occurs periodically, a segment in which impulse noise occurs, and executes speech recognition processing based on the feature components of the remaining frames excluding a feature component of a frame corresponding to the predicted segment, or the feature components extracted from frames created from sound data excluding a part corresponding to the predicted segment.

Abstract: A sound signal processing apparatus creates frames from acquired sound data, and converts a sound signal into a spectrum on a frame-by-frame basis. Then, the sound signal processing apparatus calculates a spectral envelope based on the spectrum, removes the spectral envelope from the spectrum, detects a spectral peak in the spectrum obtained by the removal of the spectral envelope, and suppresses the detected spectral peak. The sound signal processing apparatus determines a voice interval from the spectrum with the suppressed spectral peak, and executes voice recognition processing based on the spectrum with the suppressed spectral peak in a frame determined to be a voice interval.

Abstract: Sound signals from sound sources present in multiple directions are accepted as inputs of multiple channels, and signal of each channel is transformed into a signal on a frequency axis. A phase component of the transformed signal is calculated for each identical frequency, and phase difference between the multiple channels is calculated. An amplitude component of the transformed signal is calculated, and a noise component is estimated from the calculated amplitude component. An SN ratio for each frequency is calculated on the basis of the amplitude component and the estimated noise component, and frequencies at which the SN ratios are larger than a predetermined value are extracted. Difference between arrival distances is calculated on the basis of the phase difference at selected frequency, and the arrival direction in which it is estimated that the target sound source is present is calculated.

Abstract: The object is to provide a pipe connecting structure which can prevent electrical charge of a plastic coated metal pipe using a simple structure. In order to accomplish this object, beads 5a, 5b, 5c are provided to protrude from the outer surface of the end of a plastic coated metal tube 3 obtained by coating the outside of a bare metal pipe 1 with a nonconductive plastic film 2, the plastic film 2 is removed from the tip of the bead 5a to expose the circumferential surface of the bare metal pipe 1, the exposed portion is made to contact the inner surface of a conductive tube 4, thus connecting the plastic coated metal tube 3 and the conductive tube 4.

Abstract: In a biometric information registration phase, an authentication server previously obtains user information and biometric information, and registers them in a user information management part and a biometric information registration part. An authentication software transmission part associates the authentication software in an authentication software management part with the biometric information so that the software is uniquely specified, and sends it to a user terminal of interest. Thus, the user terminal, the authentication software, and the biometric information are uniquely associated with each other. In a user authentication phase, biometric information sent from the user terminal 3 using the authentication software is compared with the registered biometric information to conduct user authentication.

Abstract: A speaker verification apparatus and method input an identity claim, select voice information of a registered speaker corresponding to the input identity claim, input a voice of the speaker, analyze the input voice so as to extract a feature parameter, calculate a verification distance between a feature parameter of the input voice and that of the voice of the registered speaker and the speaker distances between a feature parameter of the input voice and those of the voices of other speakers; and determine whether or not the input voice matches that of the registered speaker. A false acceptance error rate, is input as a threshold, and a probability distribution of interspeaker distances is functions to determine that the input voice is the voice of the registered person specified by the identity claim.

Abstract: A user authentication system that uses plural pieces of biometric information and secures a high security level is provided. Each biometric information and a combination of kinds of the biometric information are called combined biometric information. At the time of registration, plural kinds of user's biometric information are obtained via a biometric information input portion 10. A combined biometric information authentication strength calculating portion 30 calculates an authentication strength for each combined biometric information, wherein the authentication strength indicates how easy the user's biometric information is distinguished from evaluation biometric information in an evaluation biometric information storing portion 20.

Abstract: In a biometric information registration phase, an authentication server previously obtains user information and biometric information, and registers them in a user information management part and a biometric information registration part. An authentication software transmission part associates the authentication software in an authentication software management part with the biometric information so that the software is uniquely specified, and sends it to a user terminal of interest. Thus, the user terminal, the authentication software, and the biometric information are uniquely associated with each other. In a user authentication phase, biometric information sent from the user terminal 3 using the authentication software is compared with the registered biometric information to conduct user authentication.