ENHANCEMENT OF VOICE SOUND SIMULATOR AND BREATH SIMULATION PUMP

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Authors
  1. Racansky, D.
  2. Kunov, H.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Toronto Univ, Toronto ONT (CAN) Inst of Biomedical Engineering
Abstract
The Human Head Simulator (HHS) was developed under contract with the Defence and Civil Institute of Environmental Medicine for studying the speech transmission properties of respiratory protective devices and transducers systems. Its capabilities were further developed and expanded so that a wide range of speech sounds and breath patterns can be simulated with ease. The HHS consists of three major parts: an anthropometrically correct headform, a breath simulation system and a voice simulation system. The CAD designed headform representing a North American male adult Caucasian is composed of a hollow hard structure covered with artificial skin simulating the mechanical properties of human skin. The headform has the correct dynamic mass and a compliant neck. It is mounted on a commerically available torso (KEMAR). The removable back of the headform allows access to mounting surfaces around the mouth and nasal openings. A microphone is positioned with its tip between the lips of the mouth opening. The breath simulation system consisting of a programmable, electronically controlled pump is capable to generate a wide range of airflow patterns associated with respiratory activity of humans under different conditions: resting, exercise, speaking and their combinations. The voice sound simulator consists of a speaker and a digital signal processing board. TRUNCATED
Keywords
Waveform generators;Speech representation
Date of publication
01 Aug 1992
Number of Pages
150
DSTKIM No
97-00610
CANDIS No
500893
Format(s):
Hardcopy;Document Image stored on Optical Disk

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