The Speech Perception Laboratory consists of a sound-treated booth housing three listening stations. Each listening station is equipped with a set of Sennheiser HD 280 Pro headphones, a touch-screen monitor used to present stimuli and collect participant responses, and a high-fidelity sound card for stimulus presentation. Signal processing and stimulus presentation is implemented using custom MATLAB software or E-Prime. ER-3A insert earphones, Tucker-Davis Technologies (TDT) hardware for stimulus presentation, Knowles Electronics Manikin for Acoustic Research (KEMAR), and high-fidelity microphones are also available for listener testing, recording, and/or acoustic measurement. The laboratory is also equipped to conduct otoscopy, tympanometry, and pure-tone audiometry measurements. All experimental testing stations may be operated remotely outside of the booth to monitor participant performance. Outside the sound-treated booth is a conference table for laboratory meetings and several PC computer stations for stimulus design, signal processing, acoustic analysis, data entry, and statistical analysis. The laboratory also collaborates with the Cochlear Implant Program at the Speech and Hearing Research Center where some clinical and experimental testing is conducted.