Abstract: The invention provides a method for stabilising a spectrometric transducer for an optical spectrum measuring instrument by obtaining an instantaneous central wavelength of a thermally controlled tunable filter of the instrument, calibrating for a selected ambient temperature, determining a heat variance of the filter and controlling the filter to compensate for heat variance.

Abstract: A method and apparatus for obtaining higher resolution spectral data on lower-resolution spectral data provided by a spectrometric transducer is described. The method includes calibrating the spectrometric transducer to produce results for a reconstruction of spectra using the results, and processing the lower-resolution spectra data using a set of numerical algorithms dedicated to an integrated micro-spectrometers associated with the spectrometric transducer and using the results of calibrating to provide the higher resolution spectra data. The apparatus utilizes the method.

Abstract: A method and apparatus for obtaining higher resolution spectral data on lower-resolution spectral data provided by a spectrometric transducer is described. The method includes calibrating the spectrometric transducer to produce results for a reconstruction of spectra using the results, and processing the lower-resolution spectra data using a set of numerical algorithms dedicated to an integrated micro-spectrometers associated with the spectrometric transducer and using the results of calibrating to provide the higher resolution spectra data. The apparatus utilizes the method.

Abstract: The invention provides a method for stabilizing a spectrometric transducer for an optical spectrum measuring instrument by obtaining an instantaneous central wavelength of a thermally controlled tunable filter of the instrument, calibrating for a selected ambient temperature, determining a heat variance of the filter and controlling the filter to compensate for heat variance.

Abstract: A method and apparatus for reconstructing a spectrum from data obtained from a spectrometric transducer is described. The method comprises computng a first estimate of the spectrum by applying a first deconvolution algorithm in a first domain to the spectrum data, computing a second estimate of the spectrum by applying a second deconvolution algorithm in the first domain to the first estimate, transforming the second estimate from the first domain to a second domain, and computing a third estimate of the spectrum by applying a third deconvolution algorithm in the second domain. The first algorithm uses calibration data obtained from the spectrometric transducer and a reference transducer.

Abstract: A method for improving characteristics of acoustic and vibration transducers, including integrated microphones and integrated transducers of vibrations, is disclosed. The method consists in the use of a low-fidelity acoustic or vibration transducer for converting an acoustic signal into an analog electrical signal, an analog-to-digital converter for converting the analog electrical signal into a digital signal and a digital processor for correcting and enhancing the latter signal. The resulting digital representation of the acoustic signal is analogous to that attainable by using a high-fidelity transducer.