University:
Massachusetts Institute of Technology
Course:
6.911 | Transcribing Prosodic Structure of Spoken Utterances with ToBI
Academic year:

2022
Views:

399

Pages:

3
Author:

Derrick Hunt

9 August 2006 2.2 Adding to the inventory: tones L* and H-H% Tonal events that cue phrasally-prominent syllables can be high or low. The following example has a falling f0 that reaches a minimum on the –nan- syllable in banana1. This is a Low pitch accent on banana, marked with L*. Again, the L stands for a low tonal target and the * means that the low tone is associated with a prominent syllable. Perceptually, you can hear that the – nan- in banana is more salient than other syllables in this utterance. Also notice that the end of the utterance has a sharply rising f0. This intonational phrase has a high phrase accent (H-) and a following high boundary tone (H%), hence it is marked as H-H%. In Mainstream American English (MAE), this intonational contour is one typical way of indicating that an utterance is a question for which the speaker expects a yes-or-no answer. Figure 2.2.1 Example of L*H-H% in banana1 The distribution of break indices in this example is the same as many of those seen in the examples in Section 2.1: there are 1's between each pair of words and a 4 at the end of the Intonational Phrase (IP). In the next example, , a chance placement of unvoiced segments /f/ and /k/ (sounds for which the vocal folds don’t vibrate, so there is no f0) separates the three tonal elements L* HH%. This results in a step-like appearance that, while convenient to illustrate the three different elements, is not typical. In other segmental contexts, the f0 for the successive tonal elements will flow smoothly from one to the next. By the way, the L* may seem to be rather high if examined out of context. However, this speaker has a relatively high pitch range. Figure 2.2.2 L*H-H% in africa.wav Most of the examples shown here and earlier have only a single IP, so that the 4 at the end of the IP is also at the end of the utterance. In cases like this, disjuncture denoted by the 4 Break Index is between the last word of the IP and the silence that follows. Perhaps the idea of “disjuncture” is more comfortably reflected in the context of a sequence of intonational phrases, which Figure 2.2.3 Example of two Intonational Phrases linked in a single utterance frequently occurs in conversational or narrative speech contexts, but not so far in this tutorial. If there are several IP’s in sequence, the 4 at the end of the each IP describes the disjuncture between the last word in the first phrase and the first word in the next phrase, as shown in the example . The words in the first part of this larger utterance (Who was it) group together into a single intonational phrase, separate from the word in the second part of the utterance (Melanie). The disjuncture between the two IP’s, marked with the break index 4, is cued by the phrase accent (L-), boundary tone (L%) and relative lengthening on the final syllable of the first intonational phrase. Inventory so far: Tones: H* high pitch accent L* low pitch accent L-L% low phrase accent, low boundary tone H-H% high phrase accent, high boundary tone Break indices: 0: word boundary erased 1: typical inter-word disjuncture within a phrase 4: end of an intonational phrase

Adding to the Inventory: L* and H-H%

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