In this paper, we describe the design procedure for a wireless communication interactive voice response system. The application must work in a very noisy environment which has imposed many design constraints. We will address the sensible aspects of three components of the application: the voice activity detector (VAD), the automatic speech recognition (ASR) system, and the confidence measure (C...

In this study, methane-ethylene jet diffusion flames modulated by acoustic excitation in an atmospheric environment were used to investigate the effects of acoustic excitation frequency and mixed fuel on nanomaterial formation. Acoustic output power was maintained at a constant value of 10 W, while the acoustic excitation frequency was varied (f = 0-90 Hz). The results show that the flame could...

The influence of the ambient pressure on load capacity near-field acoustic levitation is studied. Theoretical models based radiation and hydrodynamic lubrication theory are built, taking into account changes pressure. Both simulation measured results show that force positively proportional to increased by 4–5 times at an 0.5 MPa. A maximum 0.309 MPa obtained.