title: Polish sentence matrix test for speech intelligibility measurement in noise.
abstract: The purpose of this study was to develop the Polish sentence matrix test (PSMT) to measure intelligibility of speech presented against a background noise. The PSMT consists of five columns containing: 10 names, 10 verbs, 10 numerals, 10 adjectives, and 10 nouns. Since each word was available as a separate sound file, it was possible to generate different sentences by juxtaposing randomly selected words taken from respective columns. This approach allows 100,000 unique sentences of a fixed grammatical structure to be generated. The speech reception threshold (SRT), i.e. the signal-to-noise ratio (SNR) providing 50% speech intelligibility and S(50), the slope of an intelligibility function at the SRT point, were shown to be -9.6 dB and 17.1 %/dB, respectively. Note that in this study dB is regarded as dB SNR, otherwise reference is given. PSMT was also evaluated using an adaptive 1-up/1-down staircase procedure in investigations with and without participation of an experimenter. No significant differences were shown for SRTs obtained in these investigations.
authors.affiliation: Institute of Acoustics, A. Mickiewicz University, Poznań, Poland. ozimaku@amu.edu.pl
authors.forename: Edward
authors.initials: E
authors.lastname: Ozimek
authors.forename: Anna
authors.initials: A
authors.lastname: Warzybok
authors.forename: Dariusz
authors.initials: D
authors.lastname: Kutzner
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis*; D006801:Humans; D007802:Language; D008297:Male; D009622:Noise; D010470:Perceptual Masking; D010700:Phonetics; D012016:Reference Values; D012660:Semantics; D013018:Sound Spectrography; D013063:Speech Discrimination Tests / Q000379:methods*; D013069:Speech Reception Threshold Test / Q000379:methods*