Department of Cognitive and Neural Systems and Biomedical Engineering Boston University, 677 Beacon St., Boston, MA 02215 Email: [email protected] Ph: 617-353-5764 FAX: 617-353-7755 INTRODUCTION Relatively little psychoacoustic work has examined how realistic echoes and reverberation affect spatial auditory perception. Within psychoacoustics, echoes and reverberation are generally thought to 1) ...

In a study of the binaural properties of rooms, binaural cross-correlation (CC) functions were measured in 19 one-third-octave bands, and broad band, using an artificial head and torso (KEMAR). For a fixed source-receiver distance, twenty CC functions were collected as the source and receiver were moved to different locations in the room. The peaks of the CC functions were taken as measures of ...

A survey of respiratory isolation rooms in seven St. Louis hospitals reported in this month’s issue. begins to verify a general suspicion that many hospitals lack adequate facilities for treating patients with airborne infectious diseases such as tuberculosis (TB). Respiratory isolation rooms should be under continual “negative pressure” relative to hallways and anterooms, so that air flows fro...

OBJECTIVE To study the frequency of isolation of Acinetobacter baumannii complex (ABC) and methicillin-resistant Staphylococcus aureus (MRSA) from surfaces of rooms newly vacated by patients with multidrug-resistant (MDR) ABC following various rounds of routine terminal cleaning and disinfection (C/D) with bleach or 1 round of C/D followed by hydrogen peroxide vapor (HPV) treatment. SETTING A...