Table 7 A comparative study of different speech-eliciting tasks.

Constrained

Repeating “PATAKA”^187,188

Capture speech sequencing; a proxy for lung capacity

Sustained vowel¹⁸⁹

Measure muscle weakness and aspects of move control

Counting¹⁹⁰

Counting from 1 to 10 allows mroe control over acoustic patterns

Reading

• The “Nordwind” passage^191,192

Paragraphs frequently used in the gathering of depression-related speech

• Rainbow passage¹⁸⁹

Includes all the sounds used in English and reflects normal speech patterns

• Emotion-evoking movie clips¹⁹³

Greater ability to regulate emotions that are provoked

Free speech

Monologue

• Describing, memory recalling¹⁹⁴

More spontaneous than reading speech

Dialogue

• Semi-structured interviews¹²⁰

Frequently used in medical facilities

• Phone conversations¹⁹⁵

Only the interviewee is recorded; no need to identify the speaker