An on-line speech intelligibility measurement system

A speech intelligibility measurement system is described that uses a computer to administer the test, record the listener response, and automatically evaluate it on-line. This makes the intelligibility testing conditions uniform at all times and the test more efficient compared to conventional methods. The test words are presented in random scramblings by using a shuffling algorithm. The listener\´s response is entered via a graphic tablet used as a "software keyboard." The response evaluation is done based on the similarity of sounds and not of spellings. The system is being used in the development and evaluation of analysis-synthesis type of speech compression systems and for identifying perceptually important parameters from the linear prediction model of speech. Adaption of this system to various speech perception experiments is also discussed.