11/14/2023 0 Comments Praat sine wave speech![]() ![]() In the classic source-filter theory of speech production ( Fant, 1960), the F0 is derived from the source (i.e., vocal fold vibration). It is known that the F0 and its harmonics are the primary cues for lexical tone recognition ( Liang, 1963 Lin, 1988 Fu et al., 1998 Xu et al., 2002). It has four F0 patterns (i.e., tones): (1) high-level, (2) rising, (3) falling and then rising, and (4) high-falling (Fig. Mandarin Chinese is one of the most widely spoken tonal languages. In tonal languages, F0 patterns of the vocalic part of monosyllables convey lexical meanings. Several other studies have reported similar findings that sine-wave replicas of English sentences are highly intelligible, with recognition performance ranging from 60% to 100% correct depending on the difficulty levels of the sentence materials ( Carrell and Opie, 1992 Barker and Cooke, 1999 Nittrouer and Lowenstein, 2010). ![]() Sine-wave speech lacks many of the acoustic features of natural speech that are thought to be important for speech perception, such as the broadband formant structures, formant frequency transitions, and harmonics of a common fundamental frequency (F0) ( Remez et al., 1981 Remez et al., 1994). In such sine-wave speech, three sinusoids follow in time the frequencies and amplitudes of the first three formants of the natural utterances. A single sentence “Where were you a year ago?” spoken by an adult male voice was used in that report. (1981) reported that sine-wave replicas of full-spectrum speech signals are sufficient to support perception of the linguistic message in the absence of traditional acoustic cues when the listeners were instructed to listen for speech. ![]()
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