The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Zhen Huang - One of the best experts on this subject based on the ideXlab platform.
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acoustic assessment of snoring Sound Intensity in 1 139 individuals undergoing polysomnography
2017Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L1 ,L 5, and L10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leq is a measure of the A-weighted average Intensity of a fluctuating acoustic signal over the total test period. L10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage. Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results. Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer’s sleep, as well as the sleep of a bed partner. (CHEST 1999; 115:762‐770) Abbreviations: BMI 5 body mass index; CI 5 confidence interval; dB 5 decibel; dBA 5 Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear; L1 5 measure of the dBA level exceeded for 1% of the test period; L5 5 measure of the dBA level exceeded for 5% of the test period; L10 5 measure of the dBA level exceeded for 10% of the test period; Leq 5 a measurement of the A-weighted average energy of a fluctuating acoustic signal over a specific measurement period; LS 5 light sleep; MPCA 5 Minnesota Pollution Control Agency; OSHA 5 Occupational Safety and Health Administration; RDI 5 respiratory disturbance index; SWS 5 slow wave sleep
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The snoring spectrum: Acoustic assessment of snoring Sound Intensity in 1,139 individuals undergoing polysomnography
Chest, 1999Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L-1, L-5, and L-10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leg is a measure of the A-weighted average Intensity of a fluctuating; acoustic signal over the total test period. L-10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage, Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results, Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer's sleep, as wed as the sleep of a bed partner.
Kent Wilson - One of the best experts on this subject based on the ideXlab platform.
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acoustic assessment of snoring Sound Intensity in 1 139 individuals undergoing polysomnography
2017Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L1 ,L 5, and L10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leq is a measure of the A-weighted average Intensity of a fluctuating acoustic signal over the total test period. L10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage. Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results. Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer’s sleep, as well as the sleep of a bed partner. (CHEST 1999; 115:762‐770) Abbreviations: BMI 5 body mass index; CI 5 confidence interval; dB 5 decibel; dBA 5 Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear; L1 5 measure of the dBA level exceeded for 1% of the test period; L5 5 measure of the dBA level exceeded for 5% of the test period; L10 5 measure of the dBA level exceeded for 10% of the test period; Leq 5 a measurement of the A-weighted average energy of a fluctuating acoustic signal over a specific measurement period; LS 5 light sleep; MPCA 5 Minnesota Pollution Control Agency; OSHA 5 Occupational Safety and Health Administration; RDI 5 respiratory disturbance index; SWS 5 slow wave sleep
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The snoring spectrum: Acoustic assessment of snoring Sound Intensity in 1,139 individuals undergoing polysomnography
Chest, 1999Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L-1, L-5, and L-10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leg is a measure of the A-weighted average Intensity of a fluctuating; acoustic signal over the total test period. L-10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage, Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results, Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer's sleep, as wed as the sleep of a bed partner.
Chiaki Tanaka - One of the best experts on this subject based on the ideXlab platform.
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The influence of wood fiber direction, feed rate, and cutting width on Sound Intensity during routing
Holz als Roh- und Werkstoff, 2005Co-Authors: Piotr Iskra, Chiaki TanakaAbstract:This study examines the possibility of using Sound Intensity to monitor the wood routing process at different machining conditions. Sound Intensity is defined as the rate of flow of acoustic energy per unit area in a specified direction. For this study, specimens of Japanese beech (Fagus crenata Blume) were routed on a CNC machine tool equipped with an automatic feed. The effect of wood grain angle on the Sound Intensity energy generated and surface roughness produced was determined. Maximum Sound Intensity during routing was generated at an inclination of 135° to the grain. A linear relationship between Sound Intensity output and workpiece feed rate was recognized. Sound Intensity and surface roughness are also strongly correlated, irrespective of feed rate. In contrast, Sound Intensity more than doubled with doubling of cutting width, whereas surface roughness did not increase. The results suggest that the measurement of Sound Intensity is a promising method for monitoring surface roughness and determining optimum feed rates.
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The influence of wood fiber direction, feed rate, and cutting width on Sound Intensity during routing
Holz als Roh- und Werkstoff, 2005Co-Authors: Piotr Iskra, Chiaki TanakaAbstract:Diese Arbeit untersucht die Möglichkeit, mit Hilfe der Schallintensität den Fräsprozess unter verschiedenen Bedingungen zu überwachen. Hierzu wurden Buchenproben ( Fagus crenata Blume) auf einer CNC-Maschine mit automatischer Probenzufuhr gefräst. Der Einfluss des Faserwinkels auf die Intensität der erzeugten Schallenergie und die resultierende Oberflächenrauhigkeit wurden gemessen. Die höchste Schallintensität während des Fräsens entstand bei einer Neigung von 135° zur Faser. Zwischen Schallintensität und Vorschub des Werkstücks zeigte sich ein linearer Zusammenhang. Schallintensität und Oberflächenrauhigkeit sind ebenfalls streng korreliert, und zwar unabhängig vom Vorschub. Demgegenüber ergab sich kein Anstieg der Oberflächenrauhigkeit, wenn die Schallintensitat sich bei Verdoppelung der Schnittbreite ebenfalls verdoppelte. Aufgrund der Ergebnisse kann die Messung der Schallintensität benutzt werden, um die Oberflächenrauhigkeit zu überwachen und den optimalen Vorschub zu bestimmen. This study examines the possibility of using Sound Intensity to monitor the wood routing process at different machining conditions. Sound Intensity is defined as the rate of flow of acoustic energy per unit area in a specified direction. For this study, specimens of Japanese beech ( Fagus crenata Blume) were routed on a CNC machine tool equipped with an automatic feed. The effect of wood grain angle on the Sound Intensity energy generated and surface roughness produced was determined. Maximum Sound Intensity during routing was generated at an inclination of 135° to the grain. A linear relationship between Sound Intensity output and workpiece feed rate was recognized. Sound Intensity and surface roughness are also strongly correlated, irrespective of feed rate. In contrast, Sound Intensity more than doubled with doubling of cutting width, whereas surface roughness did not increase. The results suggest that the measurement of Sound Intensity is a promising method for monitoring surface roughness and determining optimum feed rates.
Riccardo A. Stoohs - One of the best experts on this subject based on the ideXlab platform.
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acoustic assessment of snoring Sound Intensity in 1 139 individuals undergoing polysomnography
2017Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L1 ,L 5, and L10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leq is a measure of the A-weighted average Intensity of a fluctuating acoustic signal over the total test period. L10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage. Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results. Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer’s sleep, as well as the sleep of a bed partner. (CHEST 1999; 115:762‐770) Abbreviations: BMI 5 body mass index; CI 5 confidence interval; dB 5 decibel; dBA 5 Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear; L1 5 measure of the dBA level exceeded for 1% of the test period; L5 5 measure of the dBA level exceeded for 5% of the test period; L10 5 measure of the dBA level exceeded for 10% of the test period; Leq 5 a measurement of the A-weighted average energy of a fluctuating acoustic signal over a specific measurement period; LS 5 light sleep; MPCA 5 Minnesota Pollution Control Agency; OSHA 5 Occupational Safety and Health Administration; RDI 5 respiratory disturbance index; SWS 5 slow wave sleep
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The snoring spectrum: Acoustic assessment of snoring Sound Intensity in 1,139 individuals undergoing polysomnography
Chest, 1999Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L-1, L-5, and L-10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leg is a measure of the A-weighted average Intensity of a fluctuating; acoustic signal over the total test period. L-10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage, Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results, Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer's sleep, as wed as the sleep of a bed partner.
Thomas F. Mulrooney - One of the best experts on this subject based on the ideXlab platform.
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acoustic assessment of snoring Sound Intensity in 1 139 individuals undergoing polysomnography
2017Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L1 ,L 5, and L10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leq is a measure of the A-weighted average Intensity of a fluctuating acoustic signal over the total test period. L10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage. Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results. Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer’s sleep, as well as the sleep of a bed partner. (CHEST 1999; 115:762‐770) Abbreviations: BMI 5 body mass index; CI 5 confidence interval; dB 5 decibel; dBA 5 Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear; L1 5 measure of the dBA level exceeded for 1% of the test period; L5 5 measure of the dBA level exceeded for 5% of the test period; L10 5 measure of the dBA level exceeded for 10% of the test period; Leq 5 a measurement of the A-weighted average energy of a fluctuating acoustic signal over a specific measurement period; LS 5 light sleep; MPCA 5 Minnesota Pollution Control Agency; OSHA 5 Occupational Safety and Health Administration; RDI 5 respiratory disturbance index; SWS 5 slow wave sleep
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The snoring spectrum: Acoustic assessment of snoring Sound Intensity in 1,139 individuals undergoing polysomnography
Chest, 1999Co-Authors: Kent Wilson, Riccardo A. Stoohs, Thomas F. Mulrooney, Christian Guilleminault, Linda J Johnson, Zhen HuangAbstract:Study objectives: To quantify the snoring Sound Intensity levels generated by individuals during polysomnographic testing and to examine the relationships between acoustic, polysomnographic, and clinical variables. Design: The prospective acquisition of acoustic and polysomnographic data with a retrospective medical chart review. Setting: A sleep laboratory at a primary care hospital. Participants: All 1,139 of the patients referred to the sleep laboratory for polysomnographic testing from 1980 to 1994. Interventions: The acoustic measurement of snoring Sound Intensity during sleep concurrent with polysomnographic testing. Measurements and results: Four decibel levels were derived from snoring Sound Intensity recordings. L-1, L-5, and L-10 are measures of the Sound pressure measurement in decibels employing the A-weighting network that yields the response of the human ear exceeded, respectively, for 1, 5, and 10% of the test period. The Leg is a measure of the A-weighted average Intensity of a fluctuating; acoustic signal over the total test period. L-10 levels above 55 dBA were exceeded by 12.3% of the patients. The average levels of snoring Sound Intensity were significantly higher for men than for women. The levels of snoring Sound Intensity were associated significantly with the following: polysomnographic testing results, including the respiratory disturbance index (RDI), sleep latency, and the percentage of slow-wave sleep; demographic factors, including gender and body mass; and clinical factors, including snoring history, hypersomnolence, and breathing stoppage, Men with a body mass index of > 30 and an average snoring Sound Intensity of > 38 dBA were 4.1 times more likely to have an RDI of > 10. Conclusions: Snoring Sound Intensity levels are related to a number of demographic, clinical, and polysomnographic test results, Snoring Sound Intensity is closely related to apnea/hypopnea during sleep. The noise generated by snoring can disturb or disrupt a snorer's sleep, as wed as the sleep of a bed partner.