Implementation of the adaptive Wiener filtering algorithm in the problem of measuring the ¹³CO₂ content in expiratory air using the tunable diode laser absorption spectroscopy technique

This paper reports on implementing the adaptive Wiener filtering algorithm for the processing of an experimental signal obtained by the tunable diode laser absorption spectroscopy technique near the wavelength of 2 µm using a tunable diode laser. It has been shown that applying this filter may improve the content measuring accuracy in a mixture with in expiratory air. (letter)