A Perceptual Study of Intonation: An Experimental-Phonetic by J. 't Hart, R. Collier, A. Cohen

By J. 't Hart, R. Collier, A. Cohen

This publication offers an experimental-phonetic method of the research of intonation, outlined because the ensemble of pitch diversifications in speech. It supplies a close explication of the research of intonation through the stylization strategy: learning the perceptual effects of planned simplifications of speech melody makes it attainable to offer an outline by way of perceptually appropriate, discrete occasions. Theoretical insights and the acoustic, perceptual, and physiological experimental proof that helps them are amply mentioned. Phoneticians and speech scientists will locate the leading edge, specified positive aspects of this e-book of curiosity.

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This means that the total frequency change (rate multiplied by duration) was independent of duration, which gives support to the hypothesis that the frequency difference is the important perceptual factor. 3, indicating a higher sensitivity with the longer-sweep tones. 1 duration. Incidentally, by this comparison, the 'dramatic deterioration' as mentioned above is literally explained away. 75; however, this implies that in relative terms, performance is better at the higher initial frequencies.

Pitch was transcribed taking the syllable as the descriptive unit. This procedure must have given difficulties, since, for one thing, Fo need not be stationary during the entire voiced part of the syllable; for another, if it were nevertheless perceived as stationary in some cases, the corresponding pitch sensation need not coincide with any of the discrete tones of the harmonium. 3, the absolute threshold of pitch change). The second difficulty can be avoided by taking a reference signal whose Fo can be varied continuously.

A second reason for our suspicion is that the dynamic situation of speech is characterized not only by continuous variation of Fo, but also of formant frequencies and, above all, of amplitude. In our experience, a drop in amplitude of 10 to 20 dB in several tens of milliseconds, as can often be found in transitions from vowels to consonants, can entirely obscure the presence of changes in Fo of up to half an octave. From these considerations it follows that the stimulus material to be used in experiments aiming at finding out how accurately the variations of Fo in speech should be specified in view of the limitations in speech perception should consist of entire speech utterances.

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