Demonstration of auditory impedance/reflectance measurement technique, and MIDI enters the research lab

A microcomputer‐based implementation of a two‐microphone wavetube technique for measuring acoustical impedance and energy reflectance will be demonstrated. Data can be fully analyzed with graphical output while the subject is present, thus giving the researcher important flexibility. The Musical Instrument Digital Interface (MIDI) is a standard in electronic music with potential research applications in the areas of acoustical stimulus generation, instrumentation control, and data collection. Selected applications will be demonstrated on the microcomputer with MIDI peripheral devices, and a MIDI software library designed for integration into the research setting will be described. [Work partially supported by NINCDS.]