Patents Assigned to Missouri Province Educational Institute
  • Artificial larynx with semi-automatic inflection control
    Patent number: 4039756
    Abstract: An artificial larynx helps people speak with less monotonous voice by providing an automatic pitch changer for voice inflection. The predetermined basic vocal pitch frequency circuit is modulated by a frequency control signal whose value changes at a predetermined rate established by an RC circuit, and includes switches manually-operable to select upward or downward pitch change inflections.
    Type: Grant
    Filed: November 17, 1976
    Date of Patent: August 2, 1977
    Assignee: Missouri Province Educational Institute
    Inventor: Richard Burtschi