Sound Power Estimation by Laser Doppler Vibration Measurement Techniques
نویسندگان
چکیده
منابع مشابه
Tissue blood flow measurement by laser Doppler technique
Measurement of blood flow and the effects of different factors on tissue blood flow are important fields of research in physiology and pharmacology. So far, different methods have been innovated, using laser light is the Last one. In this article history, principles and specifications of laser technique along with its advantages and disadvantages ( in comparison with other methods) are revie...
متن کاملVibration Analysis by Laser Interferometry Techniques
The application of laser interferometry techniques to study the dynamic behaviour of structural components is described. Being a non contact field technique, it allows the measurement of a dynamic displacement fields without need of additional fitting of transducers, which would change the mass of the structure. Image processing techniques are already available to reduce the time invested in th...
متن کاملNon-contact measurement of facial surface vibration patterns during singing by scanning laser Doppler vibrometer
This paper presents a method of measuring the vibration patterns on facial surfaces by using a scanning laser Doppler vibrometer (LDV). The surfaces of the face, neck, and body vibrate during phonation and, according to Titze (2001), these vibrations occur when aerodynamic energy is efficiently converted into acoustic energy at the glottis. A vocalist's vibration velocity patterns may therefore...
متن کاملLaser Doppler Displacement Measurement
Existing precision displacement-measuring devices are primarily based on linear encoders (optical or magnetic) or laser interferometers. Most encoders use grating scales and frequency counters, while most interferometers use stabilized lasers and fringe counters. In general, interferometers are more expensive and more accurate than linear encoders. However, there are large gaps in price and per...
متن کاملMeasurement of hand-vibration transmissibility by non-contact measurement techniques
Background: Workers who use hand-held vibrating tools may experience finger blanching attacks due to episodic vasospasm in the digital vessels. In occupational medicine, the pathological consequences to the exposure to handtransmitted vibration are known as vibration induced white finger (VWF). In many cases, workers are recommended to use anti-vibration gloves and a standard procedure (ISO 108...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Shock and Vibration
سال: 1998
ISSN: 1070-9622,1875-9203
DOI: 10.1155/1998/232715