Prosodic alignment in human–computer interaction

Figures & data

Figure 1. Conditions: increasing (top); constant (middle); and decreasing (bottom).

Figure 2. Task: multiple choice question, sample photo of the quiz, and appearance of an interactive experiment.

Table 1 Mean acoustic differences under three voice conditions.

Parameter	Voice conditions		Loudness (dB)	Pitch (Hz)	Mora duration (mora/s^−1)	Response latency (s)
Loudness	Increasing	1st half	64.5	125.3	0.15	2.10
		2nd half	68.0	126.6	0.14	2.10
	Constant	1st half	64.5	125.3	0.15	2.10
		2nd half	64.5	125.3	0.15	2.10
	Decreasing	1st half	68.0	126.6	0.14	2.10
		2nd half	64.5	125.3	0.15	2.10
Response latency	Increasing	1st half	64.5	125.3	0.14	2.10
		2nd half	64.3	122.8	0.14	2.40
	Constant	1st half	64.5	125.3	0.14	2.10
		2nd half	64.5	125.3	0.14	2.10
	Decreasing	1st half	64.3	122.8	0.14	2.40
		2nd half	64.5	125.3	0.14	2.10

Figure 3. Control and analysis points for each parameter: (a) loudness (upper); (b) response latency (lower).

Figure 4. Result 1: voice loudness differences among participants.

Figure 5. Result 2: differences in response latency between computer and participant voices.