* Sufficient English proficiency to complete structured voice tasks in the study application.
Comorbid Conditions
* No pre-existing neurological conditions that significantly impair speech, including but not limited to severe dysarthria, expressive aphasia, or neurodegenerative disorders.
* No history of significant speech or voice disorders, including laryngeal paralysis, severe dysphonia, or recent vocal cord surgery or radiation to the area.
* No pathology affecting the vocal cords that could interfere with voice analysis, such as vocal cord paralysis, chronic laryngitis, vocal cord nodules, polyps, granulomas, or malignancies.
* No severe hearing impairment that would interfere with voice assessments
Language o Proficiency in spoken English is required, without the need for native-level fluency. This ensures participants can accurately perform structured voice tasks, as the application and underlying acoustic models are currently validated only in English, despite the limitation in generalizability. Participants with language barriers that prevent reliabletask completion or data interpretation will be excluded.