acoustic frequency

And based on MSP 430 F 427 , multi-frequency underwater acoustic signal data collecting device is designed.

介绍了低功耗MSP430F427单片机,并基于该单片设计了一种多频水声信号数据采集器.

Research on Effect of Technology on Plant Acoustic Frequency Control in Cotton

植物声频控制技术在棉花上的应用效果研究

Hot firings show that the frequency of the oscillating shock is close to the acoustic frequency.

热试结果表明,振荡激波的频率与声频相近.

Application of acoustic frequency technology to protected vegetable production

植物声频控制技术在设施蔬菜生产中的应用

Electronic ballast ultrahigh frequency ( UHF ) can avoid the intrinsic problem of acoustic resonance of HID lamps.

采用 超高频 电子镇流器能有效克服高强度气体放电灯所固有的声谐振问题.

Hough transform is a usual method for the image edge detection. It has been used in the underwater acoustic field for estimation combined with time-frequency analysis, exemplified by estimate the frequency slope of the LFM signal with wigner-Hough transform.

Hough变换是一种用于边缘检测的图像处理手段，在水声信号处理中已被用来与时频分析手段联合起来对信号进行估计，例如Wigner-Hough变换利用对直线的Hough变换来估计线性调频信号斜率等。

Inversion method of physical parameters in concrete based on the acoustic frequency detection technique

基于音频检测技术的混凝土无损检测技术

For very high frequency clocks, a surface acoustic wave ( SAW ) oscillator is preferable.

对于非常高的频率时钟, 用声 表面波 振荡器更好.

The higher the acoustic frequency is, the stronger its directivity is.

而且所有声频均有指向性,声频愈高, 指向性愈强.

Application of acoustic frequency technique in shipbuilding technology

声频技术在船舶建造工艺中的应用