US Patent 7143031 Determining speech intelligibility

An improved method and system for performing speech intelligibility testing includes calibrating one or more recorded spoken words to have substantially the same sound energy and presenting the one or more calibrated recorded spoken words to a test subject. Speech intelligibility of the test subject is measured by utilizing the one or more calibrated recorded spoken words wherein the speech intelligibility measured is indicative of a percentage of the calibrated word or words that the test subject successfully identified.