Abstract Taking the commonly used acoustic detection technology as research object, working principle of different types and application adverse geological forecasting nondestructive testing in geotechnical field are described, advantages disadvantages pointed out through discussion development technology.

In this work, aluminum nitride (AlN) thin films with different thicknesses were deposited on quartz and  silicon  substrates  using  single  ion  beam  sputtering  technique.  The  physical  and  chemical properties  of  prepared  films  were  investigated  by  different  characterization  technique.  X-ray diffraction (XRD) spectra revealed that all of the deposited films have an amorphous str...

In this paper, we present a new method of language detection. This method is based on language pair discrimination using neural networks as classifier of acoustic features. No acoustic decomposition of the speech signal is needed. We present an application of our method for the detection of 11 languages for a signal duration of 3 seconds (OGI MLTS corpus). The obtained results highlight scores ...

The article describes a video-only speech recognition system for a “silent speech interface” application, using ultrasound and optical images of the voice organ. A one-hour audiovisual speech corpus was phonetically labeled using an automatic speech alignment procedure and robust visual feature extraction techniques. HMM-based stochastic models were estimated separately on the visual and acoust...

Time-resolved x-ray diffraction with picosecond temporal resolution is used to probe the product state of a coherent control experiment in which a single acoustic mode in a bulk semiconductor is driven to large amplitude or canceled out. It is demonstrated that by shaping ultrafast acoustic pulses one can coherently control the x-ray diffraction efficiency of a crystal on the time scale of a vi...