The absence of low-frequency (LF) components in seismic records leads to nonuniqueness in inversion, making the building of a reasonable LF model crucial for achieving high-precision acoustic ...

The mechanical properties of lithium-ion batteries (LIB) are closely related to their state-of-charge (SOC) and state-of-health (SOH). Here, we introduce an in-operando acoustic technique based on ...

Letshuoer D13 Review. Probably like many people reading this, Letshuoer has been on my radar ever since I got to try the Letshuoer S12, a rather impressive planar IEM that holds excellent value at ...

where C ̂ and L ̂ respectively denote the global dissipation matrix and the global matrix related to AF. Both matrices are complex-valued. The sound pressure is computed by solving the linear system ...

The acoustic liner which installed at the internal part of the nacelle is applied to reduce the fan noise, which is the main noise source of the aircraft. Acoustic liner is submitted to high flow ...

With the TDR functionality, it’s possible to “filter” the gain-frequency graph with a filter in time. Effectively, the VNA software can do a TDR transformation of the frequency measurement, remove ...

1 State Grid Shaanxi Electric Power Research Institute, Xi’an, China; 2 State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Mechanical Engineering, Xi’an Jiaotong ...

Only 0.1% of the acoustic energy can transmit across the water–air interface because of the huge acoustic impedance mismatch. Enhancing acoustic transmission across the water–air interface is of great ...