Recording and reproducing speech airflow outside the mouth (2015)
AuthorsDerrick D, De Rybel T, Fiasson Rshow all
Researchers present a system that produces artificial airflow with a similar intensity envelope to that produced during speech, as measured 1 cm away from the lips. They have made an airflow estimator system that does not interfere with speech production. The system consists of a ping pong ball mounted on a carbon fiber lever that flexes a thin, flat, carbon-fiber member to which two strain gauges are affixed on opposite sides. These strain gages are part of a sinusoidal-driven bridge, the output of which, after amplification, is an amplitude-modulated sine wave that is can be recorded using a standard XLR based pre-amplifier into a computer.
CitationDerrick D, De Rybel T, Fiasson R (2015). Recording and reproducing speech airflow outside the mouth. Canadian Acoustics - Acoustique Canadienne. 43. 3. 106-107.
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