منابع مشابه
Architectural Acoustics: Acoustics of Concert Halls II
Some high-resolution direction-of-arrival DOA estimation methods, such as the MUSIC method, have been developed based on vectorsensor array. However, these high-resolution methods suffer from serious drawbacks. Indeed, they are not able to estimate coherent signals and sensitive to calibration errors. Mainly to overcome these limitations and in particular to satisfy practical engineering applic...
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A new acoustic measurement signal that is a hybrid signal of time-stretched pulse TSP , or lin-TSP, and logarithmic TSP log-TSP is proposed. The signal, referred to as warped-TSP Morise et al., IEICE Trans. Fundamentals, A, J89-A 1 , 7–14 2006 , has a single parameter to adjust for better measurements in accordance with ambient noise conditions. It also provides a means to eliminate harmonic di...
متن کاملArchitectural Acoustics: General Topics in Architectural Acoustics
The Audio Arts and Acoustics department at Columbia College in Chicago acquired a new building in 2003. The facility, a former bank, contained an old steel and concrete vault that was converted to a reverberation chamber. The acoustic properties of the space, including reverberation time, modal density, and early reflection maps were analyzed and compared to a computer model. Reflectograms were...
متن کاملIntracardiac Thrombosis in Sickle Cell Disease
In patients with sickle cell disease, thrombotic microangiopathy is a rare complication. Also in sickle cell disease, intracardiac thrombus formation without structural heart diseases or atrial arrhythmias is a rare phenomenon. We herein describe a 22-year-old woman, who was a known case of sickle cell-βthalassemia, had a history of recent missed abortion, and was admitted with a vaso-occlusive...
متن کاملIntracardiac Masses
Transthoracic Echocardiography : The transthoracic study was done by using Philips HD 11 XE Machine with a multifrequency S4-2 transducer. The echocardiographic examination included use of various views parasternal long axis view, parasternal short axis view, apical four chamber view, apical two chamber view and sub costal view if necessary. Thrombus, vegetation and tumor were d i a g n o s e d...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1957
ISSN: 0001-4966
DOI: 10.1121/1.1919114