Adaptive array control device, method and program, and adaptive array processing device, method and program using the same

An adaptive array control device comprising:

• analyzing means for analyzing amplitude information of a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and acquiring a signal characteristic;
• correcting means for correcting the first array-processed signal corresponding to the acquired signal characteristic to thereby output as a first corrected array-processed signal;
• SIR estimating means for estimating a ratio of interference to the target signal (SIR) according to the first corrected array-processed signal;
• and
• arithmetic control means for generating a control signal for controlling speed and accuracy of parameter adjustment in a predetermined adaptive array processing section using an estimated SIR value.

An adaptive array control device comprising:

• an analyzing section for analyzing a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and acquiring a signal characteristic;
• a correcting section for correcting the first array-processed signal corresponding to the acquired signal characteristic to thereby output as a first corrected array-processed signal;
• a second array-processed signal generating section for attenuating the target signal with respect to the other signals to thereby generate a second array-processed signal;
• a calculation section for calculating a relative magnitude relationship between the first corrected array-processed signal and the second array-processed signal;
• and
• an arithmetic control section for generating a control signal for controlling speed and accuracy of parameter adjustment in a predetermined adaptive array processing section using the magnitude relationship calculated by the calculation section.

An adaptive array control device comprising:

• analyzing means for analyzing a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and acquiring a signal characteristic;
• correcting means for correcting the first array-processed signal corresponding to the acquired signal characteristic to thereby output as a first corrected array-processed signal;
• second array-processed signal generating means for attenuating the target signal with respect to the other signals to thereby generate a second array-processed signal;
• calculation means for calculating a relative magnitude relationship between the first corrected array-processed signal and the second array-processed signal;
• and
• arithmetic control means for generating a control signal for controlling speed and accuracy of parameter adjustment in a predetermined adaptive array processing section using the magnitude relationship calculated by the calculation section.

An adaptive array controlling method comprising:

• analyzing amplitude information of a first array-processed signal generated by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and acquiring a signal characteristic thereof;
• correcting the first array-processed signal corresponding to the acquired signal characteristic and outputting as a first corrected array-processed signal;
• estimating a ratio of the target signal to interference (SIR) according to the first corrected array-processed signal;
• and
• setting and controlling speed and accuracy of parameter adjustment in predetermined adaptive array processing to be in an optimum state using an estimated SIR value estimated in the SIR estimation step.

An adaptive array controlling method comprising:

• analyzing a first array-processed signal generated by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and acquiring a signal characteristic thereof;
• correcting the first array-processed signal corresponding to the acquired signal characteristic and outputting as a first corrected array-processed signal;
• acquiring a second array-processed signal by attenuating the target signal with respect to the other signals;
• specifying a relative magnitude relationship between the corrected first corrected array-processed signal and the generated second array-processed signal;
• and
• setting and controlling speed and accuracy of parameter adjustment in adaptive array processing to be in an optimum state according to the specified relative magnitude relationship.

A computer readable recording medium storing an adaptive array controlling program which is configured to cause a computer to perform:

• a signal characteristic analyzing function to analyze a first array-processed signal generated by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and to acquire a signal characteristic thereof;
• a first array-processed signal correcting function to correct the first array-processed signal according to the generated signal characteristic to thereby acquire a first corrected array-processed signal;
• an output difference calculation function to calculate output differences between a plurality of pairs of sensors having different sensor intervals;
• a second array-processed signal generating function to acquire a second array-processed signal by attenuating the target signal with respect to the other signals using the calculated output differences;
• a magnitude relationship specifying function to acquire a relative magnitude relationship between the corrected first corrected array-processed signal and the generated second array-processed signal;
• and
• an adaptive array processing controlling function to set and control speed and accuracy of parameter adjustment in adaptive array processing to be in an optimum state according to the relative magnitude relationship specified.

An adaptive array processing device comprising:

• a first array-processed signal generating section for processing to enhance a target signal, included in a plurality of signals transmitted from a group of sensors arranged in an array, with respect to other signals to thereby generate a first array-processed signal;
• a second array-processed signal generating section for attenuating the target signal with respect to the other signals to thereby generate a second array-processed signal;
• a correlation elimination section for adaptively eliminating a signal component correlating to the second array-processed signal from the first array-processed signal;
• an analyzing section for analyzing the first array-processed signal to thereby acquire a signal characteristic;
• a correcting section for correcting the first array-processed signal according to the signal characteristic acquired by the analyzing section and outputting the signal as a first corrected array-processed signal;
• a calculation section for calculating a relative magnitude relationship between the first corrected array-processed signal and the second array-processed signal;
• and
• an arithmetic control section for generating a control signal for controlling speed and accuracy of parameter adjustment in the adaptive processing using the magnitude relationship output from the calculation section, wherein
• by using the control signal output from the arithmetic control section, operation of at least one of the first array-processed signal generating section, the second array-processed signal generating section, and the relative elimination section, is controlled.

An adaptive array processing device comprising:

• first array-processed signal generating means for processing to enhance a target signal, included in a plurality of signals transmitted from a group of sensors arranged in an array, with respect to other signals to thereby generate a first array-processed signal;
• second array-processed signal generating means for attenuating the target signal with respect to the other signals to thereby generate a second array-processed signal;
• correlation elimination means for adaptively eliminating a signal component correlating to the second array-processed signal from the first array-processed signal;
• analyzing means for analyzing the first array-processed signal to thereby acquire a signal characteristic;
• correcting means for correcting the first array-processed signal according to the signal characteristic acquired by the analyzing means and outputting the signal as a first corrected array-processed signal;
• calculation means for calculating a relative magnitude relationship between the first corrected array-processed signal and the second array-processed signal;
• and
• arithmetic control means for generating a control signal for controlling speed and accuracy of parameter adjustment in the adaptive processing using the magnitude relationship output from the calculation means, wherein
• by using the control signal output from the arithmetic control means, operation of at least one of the first array-processed signal generating means, the second array-processed signal generating means, and the relative elimination means, is controlled.

An adaptive array processing method comprising:

• processing to enhance a target signal, included in a plurality of signals transmitted from a group of sensors arranged in an array, with respect to other signals to thereby generate a first array-processed signal;
• attenuating the target signal with respect to the other signals to thereby acquire a second array-processed signal;
• analyzing the first array-processed signal when eliminating a signal component correlated to the generated second array-processed signal from the first array-processed signal and outputting, to thereby acquire a signal characteristic;
• correcting the first array-processed signal corresponding to the generated signal characteristic to thereby acquire a first corrected array-processed signal;
• attenuating the target signal with respect to other signals to thereby generate a third array-processed signal;
• acquiring a relative magnitude relationship between the corrected first corrected array-processed signal and the generated third array-processed signal;
• and
• controlling speed and accuracy of parameter adjustment in the adaptive processing according to the specified relative magnitude relationship.

A computer readable storing medium storing an adaptive array processing program configured to cause a computer to perform:

• a first array-processed signal generating function to process to enhance a target signal, included in a plurality of signals transmitted from a group of sensors arranged in an array, with respect to other signals to thereby generate a first array-processed signal;
• a second array-processed signal generating function to attenuate the target signal with respect to the other signals to thereby acquire a second array-processed signal;
• a correlative component eliminating function to eliminate a signal component correlated to the generated second array-processed signal from the first array-processed signal and output;
• a signal characteristic generating function to analyze the first array-processed signal in which the target signal is enhanced with respect to the other signals to thereby acquire a signal characteristic;
• a first array-processed signal correcting function to correct the first array-processed signal corresponding to the generated signal characteristic to thereby acquire a first corrected array-processed signal;
• an output difference calculating function to set a plurality of pairs of sensor having different sensor intervals based on a plurality of pieces of array sensor information input, and to calculate output differences between the pairs of sensors;
• a second array-processed signal generating function to generate a second array-processed signal, in which the target signal is attenuated with respect to the other signals, using the output differences;
• a magnitude relationship specifying function to acquire a relative magnitude relationship between the corrected first corrected array-processed signal and the generated second array-processed signal;
• and
• an adaptive array processing controlling function to set and control speed and accuracy of parameter adjustment in the adaptive processing to be in an optimum state using the specified relative magnitude relationship.

An adaptive array control device comprising:

• a fricative sound detecting section for analyzing a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and detecting as a fricative sound;
• an enhancing section for enhancing amplitude of the first array-processed signal when detected as a fricative sound, and outputting the signal as a first enhanced array-processed signal;
• an SIR estimating section for estimating a ratio of the target signal to interference (SIR) according to the first enhanced array-processed signal;
• and
• an arithmetic control section for generating a control signal for controlling speed and accuracy of parameter adjustment in predetermined adaptive array processing using an estimated SIR value.

An adaptive array control device comprising:

• fricative sound detecting means for analyzing a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and detecting as a fricative sound;
• enhancing means for enhancing amplitude of the first array-processed signal when detected as a fricative sound, and outputting the signal as a first enhanced array-processed signal;
• SIR estimating means for estimating a ratio of the target signal to interference (SIR) according to the first enhanced array-processed signal;
• and
• arithmetic control means for generating a control signal for controlling speed and accuracy of parameter adjustment in predetermined adaptive array processing using an estimated SIR value.

An adaptive array controlling method comprising:

• analyzing a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and detecting as a fricative sound;
• when detected as a fricative sound, enhancing amplitude of the first array-processing signal to thereby acquire a first enhanced array-processed signal;
• and
• setting and controlling speed and accuracy of parameter adjustment in a predetermined adaptive array processing to be in an optimum state using a ratio of the target signal to interference (SIR), the ratio being estimated according to the first enhanced array processing signal.

A computer readable recording medium storing an adaptive array control program configured to cause a computer to perform:

• a fricative sound detecting function to analyze a first array-processed signal formed by enhancing a target signal, included in a plurality of signals transmitted from a plurality of sensors arranged in an array, with respect to other signals, and to detect as a fricative sound;
• a first array-processing signal enhancing function to enhance amplitude of the first array-processed signal when detected as a fricative sound to thereby acquire a first enhanced array-processed signal;
• an SIR estimating function to estimate a ratio of the target signal to interference (SIR) according to the first enhanced array-processed signal;
• and
• an adaptive array processing control function to set and control speed and accuracy of parameter adjustment in predetermined adaptive array processing to be in an optimum state using an estimated SIR value.