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Testing SpeechMate as a speech support system for public speaking and challenging conversations

A proof of concept study of SpeechMate for synchronised speech guidance during public speaking and challenging conversations in adults who stutter, adults with apraxia of speech, and typically fluent adults, measuring percentage of disfluent syllables, speech naturalness, usability, and willingness to public speaking

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN15824435
Enrollment
45
Registered
2026-06-05
Start date
2026-06-15
Completion date
Unknown
Last updated
2026-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Speech production during public speaking and semi-structured conversation, including developmental stuttering, apraxia of speech, and typically fluent speech. Mental and Behavioural Disorders

Interventions

SpeechMate is an experimental speech support system based on the principle that speaking in unison with an external voice can reduce disfluent syllables in people who stutter. The system combines a mo

Sponsors

University of Oxford
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Adults aged 18 to 65 years 2. Able to speak English with sufficient proficiency to complete prepared speaking tasks, semi-structured conversation tasks, and self report questionnaires 3. Normal or corrected to normal hearing and vision 4. Able to provide written informed consent 5. For the stuttering group: identifies as a person who stutters or has a prior diagnosis of developmental stuttering 6. For the typically fluent group: identifies as a typically fluent speaker 7. For the apraxia of speech group: self reported clinical diagnosis of apraxia of speech

Exclusion criteria

Exclusion criteria: 1. Uncorrected hearing or vision impairments that would interfere with the study tasks 2. Any medical or neurological condition that would make wearing smart glasses, bone conduction earbuds, or wearable input devices uncomfortable or unsafe 3. A diagnosed speech, language, or neurological disorder other than developmental stuttering or apraxia of speech, such as dysarthria 4. Inability to complete the speaking tasks or questionnaires in English 5. Inability or unwillingness to provide written informed consent

Countries

England, United Kingdom

Contacts

Public ContactBirtan Demirel
birtan.demirel@eng.ox.ac.uk+44 07721928334

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 29, 2026