Preparation of templates in speech command recognition by single- and double-channel scheme in background noise

One of the methods for speech command (SC) recognition against a very noisy background is to compare SCs to their templates stored in a database. There is no noise in the templates, so their pauses can be determined precisely. The recognized SCs are noisy, and their pauses are determined with errors. In recognition, the SC pauses should match the template pauses. To achieve this, it is suggested that noise be added to templates and template pauses be redetermined by the same method. This noise is taken from the second microphone located at a distance from the basic one and receiving noise clean of speech signal. Our studies have shown the proposed procedures to improve the quality of SC recognition. Viktor Rostislavovich Krasheninnikov. Born 1945, Dr. of Techn. Sc. (1996), Professor (1997), Head of the Chair of the Systems of Automated Designing (SAPR), Ulyanovsk State Technical University, scientific interests include: statistical analysis of multidimensional images and fields. At present has 160 publications. Andrey Igorevich Armer. Born 1982, Cand. of Techn. (2006), Docent of the Chair of SAPR of the Ulyanovsk State Technical University (2007), scientific interests include: processing and analysis of speech signals, pattern recognition. At present has 21 publication. Aleksey Vasil’evich Khvostov. Post-graduate student of the Chair of SAPR, Ulyanovsk State Technical University, scientific interests include: detection of signals, processing and analysis of speech signals. At present has 10 publication.     

A GDP Facility for Studying the Permeability of Membranes Interacting with Gaseous Hydrogen

Instruments and Experimental Techniques - An experimental GDP facility was created for studying the hydrogen permeability of materials, including materials with low diffusion coefficients. The...     

Polystyrene and copper isentropes obtained on the data of shock compressed materials of high porosity

The paper deals with the determination of the isentrops of the shock compressed polystyrene and copper by the method developed previously. To widen the limits of calculations the Rankine-Hugoniot adiabats were measured for low density porous samples. It was found that highly porous materials are transformed into a gaseous state immediately in the shock wave compression thus the calculated isentrops cover both solid and gas state regions.     

Algorithm for Synchronizing the Results of Measurements of the Position of the Electromechanical System and of the emf of the Inductor During Dynamic Operation of the Kibble Balance

Measurement Techniques - An algorithm is developed for synchronizing the results of measurements of the emf of the inductor and the position of the coil of the electromechanical system during...     

Production of highly porous fractal coatings by the plasma-explosion method

Experiments on deceleration of a dense metal plasma obtained under explosive loading of porous specimens have shown that a highly porous coating is formed on the target surface. The coating has a vortex structure; finely dispersed fractal filaments are located on the surface of the vortices. The sprayed surface consists of the recrystallized material of the porous specimen with small admixtures of the target material. In the case of deceleration of a multicomponent plasma, the coating has an analogous structure and consists of the specimen components and target material, which are uniformly distributed over the surface.Institute of Geosphere Dynamics, Russian Academy of Sciences, Moscow 117334. Translated from Fizika Goreniya i Vzryva, Vol. 31, No. 2, pp. 110–113, March–April, 1995.     

Electronic structure of carbynes studied by Auger and electron energy loss spectroscopy

The experimental carbon Auger lineshape for two samples of carbyne has been obtained. The electronic structure of carbynes has been calculated by the self-deconvolution of experimental Auger spectra. Results are discussed in terms of the electronic properties of linear molecules with 2–6 carbon atoms. It is shown that both carbyne samples have a linear structure with cumulene-type bonds but with different numbers of atoms in the chain. The influence of annealing at T < 600°C on the carbyne structure has been studied. The electron energy loss spectrum of carbynes is analyzed.     

Stability of the process of evaporation from a porous structure during displacement of the liquid by capillary forces

It is demonstrated that evaporation can be stable when the driving capillary pressure head varies across the thickness of a porous plate. Expressions are proposed which describe the effect of structural features and process conditions on the stability characteristics of this process.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 5, pp. 870–876, November, 1980.     

Use of an electronic computer to determine the heat flux by means of the nonstationary temperature field at the nozzle wall

A method to determine the heat flux in a nozzle at stream temperatures above the nozzle wall melting point is elucidated. An experimental distribution of the local heat flux along the nozzle contour is presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 29, No. 1, pp. 56–59, July, 1975.