Open AccessAbout the methods of forming a test signal in the instrumental evaluation of speaker clearance
Author(s) -
В. А. Трушин,
Vladimir E. Khitsenko
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1441/1/012050
Subject(s) - intelligibility (philosophy) , formant , speech recognition , computer science , interference (communication) , speech processing , acoustics , vowel , telecommunications , physics , epistemology , philosophy , channel (broadcasting)
This work presents the analysis of the possibility of creating a speech-like test signal for formant methods of assessing speech intelligibility based on the tables of syllables and words, random selection of speech elements from the database, the synthesis of sound files. Experimental research of the synthesized speech spectra, as well as its probability density, has been carried out. It is shown that the spectral and statistical characteristics of the synthesized speech-like test signals of the three voices of “speech choir” type coincide with the similar characteristics of real speech signals. Articulation tests of speech intelligibility by using synthesized speech-like interference with different signal-to-noise ratios showed the possibility of reducing the integral level of interference by 12 ÷ 15 dB in comparison with noise-like interference. There is discussed the direction of further research of improving the efficiency of generation of speech-like interference.