Audio Recording and Normalisation
Female voice is preferred because young children are described as more familiar with and less inhibited toward female voices. Stimulus-level adjustments may attenuate easier words or amplify harder words, with a maximum adjustment of ±4 dB…
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Female voice is preferred because young children are described as more familiar with and less inhibited toward female voices. Stimulus-level adjustments may attenuate easier words or amplify harder words, with a maximum adjustment of ±4 dB. LTASS is compared with reference data to check whether stimulus spectra align with natural speech. Normalisation equalises intelligibility so individual test words are not systematically easier or harder to perceive. Speech stimuli are recorded by a native female speaker. The recording protocol specifies a 48 kHz sampling rate, 16-bit depth, and ISO 8253-3:2022 standard.