System for measuring velar function during speech
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United States of America Patent
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Feb 1, 2005
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app pub date -
Oct 23, 2000
filing date -
Oct 23, 2000
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Expired
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Abstract
A method of and device for the diagnosis and treatment of speech dynamically measures the functioning of the velum in the control of nasality during speech. Various components of oral and nasal airflow are separated and selectively analyzed including (i) the fundamental frequency component of each airflow during voiced speech, (ii) a plurality of voice components that cover a frequency range encompassing at least the lowest vocal tract resonance (the first formant), and (iii) the subsonic and infrasonic components of at least the nasal airflow. By comparing the nasal and oral airflow components at the voice fundamental frequency, a nasalization measure for voiced speech sounds is formed which emulates methods that compare low frequency nasal and oral airflow during voiced speech, while eliminating or greatly reducing the problems associated with comparing these low frequency airflows, and which improves upon previous methods based on measuring and comparing nasal and oral radiated sound pressure. A circumferentially vented screen mask (C-V mask) is configured with separate nasal and oral chambers to separate the two airflows, and causes only a minimal distortion and muffling of the voice. The separate nasal and oral airflows are detected and filtered, and a ratio of the two is formed to provide a visual display used to detect and correct abnormal or incorrect speech formation and word pronunciation.
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Inventor Name | Address | # of filed Patents | Total Citations |
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Rothenberg, Martin | 216 Oakmount Dr., Dewitt, NY 13214 | 15 | 292 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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