The present invention is directed to a system for measuring noise and velocity of a single object or surface in a soundscape of multiple noise-emitting objects or surfaces. The present invention features a system comprising a heterodyne signal system comprising a signal emitter, a signal receiver, and a signal processing component capable of directing an original signal to the object or surface, accepting a return signal Doppler shifted and mixed with the original signal, and removing the original signal, resulting in an output signal. The system may further comprise an acoustic spectrum analyzer capable of calculating a radiation-factor from the output signal, calculating a mean-squared velocity value by calculating a variance of a spectral shape of the output signal, calculating a noise-sound-power value from the mean-squared velocity value and the radiation-factor, and converting the noise-sound-power value into an acoustic decibel value.

Provided are a measurement result display device and a measurement result display method which are capable of making a list of how much difference is present between an allowable value and a measurement value of each measurement item measured by a measuring instrument, in a visually discriminable state. An allowable upper limit value indicator 21 and an allowable lower limit value indicator 22 are disposed at display positions which are set in advance in a measurement result image 20 as positions indicating an allowable upper limit value and an allowable lower limit value, and a measurement value indicator 23 is disposed at a display position calculated from display positions of the allowable upper limit value indicator 21 and allowable lower limit value indicator 22 and a measurement value measured by the measurement unit 10.

Provided are a measurement result display device and a measurement result display method which are capable of making a list of how much difference is present between an allowable value and a measurement value of each measurement item measured by a measuring instrument, in a visually discriminable state. An allowable upper limit value indicator 21 and an allowable lower limit value indicator 22 are disposed at display positions which are set in advance in a measurement result image 20 as positions indicating an allowable upper limit value and an allowable lower limit value, and a measurement value indicator 23 is disposed at a display position calculated from display positions of the allowable upper limit value indicator 21 and allowable lower limit value indicator 22 and a measurement value measured by the measurement unit 10.

A spectrum processing apparatus includes: a spectrum obtainer configured to obtain an optical spectrum from a light that is scattered or reflected from a subject; and a processor configured to split the optical spectrum into a plurality of bands, determine, based on a predetermined measurement accuracy for measuring a biosignal from the light, one or more key bands from the plurality of bands, and obtain the biosignal from the determined key bands.

A spectrum processing apparatus includes: a spectrum obtainer configured to obtain an optical spectrum from a light that is scattered or reflected from a subject; and a processor configured to split the optical spectrum into a plurality of bands, determine, based on a predetermined measurement accuracy for measuring a biosignal from the light, one or more key bands from the plurality of bands, and obtain the biosignal from the determined key bands.

An optoelectronic device for extracting characteristics in analog radiofrequency signals, forming an analog input signal, the device comprising: an input module generating an optical carrier wave and performing a modulation of this carrier by the analog input signal, to form a modulated optical signal; a network of linear optical cavities optically pumped and coupled by the modulated optical signal; an optical device for measuring the measured quantities of the optical fields, these optical fields being induced by the optical signal modulated by the analog input signal; a calculation module performing a linear transformation on the measured quantities of the optical fields; to make it possible to reconstruct and extract targeted characteristics contained in the spectrum of the radiofrequency input signal, the calculation module having performed machine learning on noisy analog radiofrequency drive signals having the same targeted characteristics in order to determine parameters.

An optoelectronic device for extracting characteristics in analog radiofrequency signals, forming an analog input signal, the device comprising: an input module generating an optical carrier wave and performing a modulation of this carrier by the analog input signal, to form a modulated optical signal; a network of linear optical cavities optically pumped and coupled by the modulated optical signal; an optical device for measuring the measured quantities of the optical fields, these optical fields being induced by the optical signal modulated by the analog input signal; a calculation module performing a linear transformation on the measured quantities of the optical fields; to make it possible to reconstruct and extract targeted characteristics contained in the spectrum of the radiofrequency input signal, the calculation module having performed machine learning on noisy analog radiofrequency drive signals having the same targeted characteristics in order to determine parameters.

A fiber sheet is densely charged with electric charge and provides an electret fiber sheet that has excellent dust collecting performance. The electret fiber sheet is an electret fiber sheet in which averages of a* values and b* values satisfy all requirements of the following (a) to (c): (a) 10average of (a* values)40; (b) 25average of (b* values)0; and (c) 5average of [(a* values)+(b* values)]40; wherein a* and b* are values measured by a spectrophotometer when a red positive charge toner and a blue negative charge toner are attached.

A system and method for detecting dynamic electromagnetic emission of an integrated circuit (IC) chip is provided. One embodiment of the method, includes exciting nitro variance (NV) centers of a diamond slide located in close proximity to the IC chip via use of light, resulting in an NV fluorescence; providing an optical readout of the NV fluorescence, wherein the optical readout provides quantum states of the NV centers, thereby providing a spectra of electromagnetic fields of the IC chip. A determination is then made of at least one of the group comprising clock frequencies of the IC chip, referred to herein as determined clock frequencies, and data bandwidth of the IC chip, referred to herein as determined data bandwidth of the IC chip, from the spectra of electromagnetic fields of the IC chip. A comparison is then performed, comparing at least one of the group comprising determined clock frequencies and determined data bandwidth.

A system and method for detecting dynamic electromagnetic emission of an integrated circuit (IC) chip is provided. One embodiment of the method, includes exciting nitro variance (NV) centers of a diamond slide located in close proximity to the IC chip via use of light, resulting in an NV fluorescence; providing an optical readout of the NV fluorescence, wherein the optical readout provides quantum states of the NV centers, thereby providing a spectra of electromagnetic fields of the IC chip. A determination is then made of at least one of the group comprising clock frequencies of the IC chip, referred to herein as determined clock frequencies, and data bandwidth of the IC chip, referred to herein as determined data bandwidth of the IC chip, from the spectra of electromagnetic fields of the IC chip. A comparison is then performed, comparing at least one of the group comprising determined clock frequencies and determined data bandwidth.