Development of the Polish Speech Test Signal and its Comparison with the International Speech Test Signal

The aim of this study was to create a single-language counterpart the International Speech Test Signal (ISTS) and compare both with respect their acoustical characteristics. development procedure Polish (PSTS) analogous one ISTS. main difference that instead multi-lingual recordings, speech recordings five speakers were used. cut into 100–600 ms long segments composed one-minute signal, obeying set composition rules, imposed mainly preserve natural, speech-like features signal. Analyses revealed some differences between ISTS PSTS. latter has about twice as high volume voiceless fragments speech. PSTS’s sound pressure levels in 1/3-octave bands resemble shape long-term average female spectrum, having distinctive maxima at 3–4 8–10 kHz which lacks. As PSTS is representative language contains inputs from multiple speakers, it can potentially find an application standardized signal used during fitting hearing aids for patients use language.