Fig. 1
From: Melodic and articulatory development is delayed in deaf infants aged 2–4 months
Example of an annotated cooing sequence in PRAAT. The upper section of the PRAAT output window displays the amplitude of the recorded sequence. The middle section shows the frequency spectrogram (frequency range linear 0–4 kHz). The lower area of the output window shows the annotation variables of the individual events. Here, the sequence consists of pauses (p) and three cooing vocalisations (c) separated by inspiratory intervals (i). Unlike the other two coos, the cooing vocalisation marked in yellow contains no supra-laryngeal activity (vocant).
