Voiceitt for People With Impairments in Speech

Inclusion Criteria: * Age 13 or older * moderately severe speech dysarthria due to conditions such as CP, stroke, ALS or Parkinson's Disease, etc. * Ability to understand and follow instructions for using the Voiceitt app. Exclusion Criteria: * Severe cognitive impairments that prevent the understanding of the Voiceitt app and required training. * Patients who have additional speech impairments other than dysarthria, such as significant aphasia or verbal apraxia. * Severe physical impairments that prevent interaction with the app. * Non-English speakers.