( 3 ) the study of dynamic test technique is carried through , and the easily neglected problem of sampling frequency settings is discussed ( 3 )对动力测试技术进行了试验研究,对脉冲锤击法试验中采样频率设置这一易被人们忽略的问题进行了探讨。
It ' s memory capacity is 1 . 5m . it can collect the signal of two big - size bearings including six testing spot at the same time in 2560hz sampling frequency 其存储容量为1 . 5m ,以2560hz的采样频率可以采集2台大型回转支承, 6个测点的振动信号,数据掉电保护。
Use 24bit dac 96khz to process audio by sampling frequency and output perfect sound quality by 5 . 1 channel double decoding . no need to connect to the external decoding amplifier 专业的音频视频输出端子,自动制式pal ntsc制式兼容av监视器,支持家用电视输出
Judgment of the point of zero passage is the key factor involved , and a higher sampling frequency should be adopted when the method is applied on situations of large signal amplitude 其中过零点判定为关键技术,当用于信号幅值较大场合时应尽量提高信号采样频率。
The research results show that the influence of sampling frequency , sampling error of peak value , strobe - position and strobe - width on fft and ifft is obvious 研究发现,超声信号的采样频率、采样特征点、闸门位置及闸门宽度对超声信号的fft及ifft结果有明显的影响。
Author suggests that increasing number of measurement taps and prolonging sampling time and enhancing sampling frequency will decrease signals aliasing and leakiness 并提出在进行压力脉动试验时,应增加测点、延长采样时间、提高采样频率以避免信号遗漏和信号混叠等现象的发生。
It shows that the design is correct . writing a software for real - time collecting . displaying . saving , this software can set sampling frequency and time , the maximal frequency is looohz 编制了实时采集、显示、存储软件,该软件能设定采样频率和采样时间,最高频率可达1000hz 。
Through discussing the samples of ac signal , the basic method to solve spectrum leakage is pointed out , which is to guarantee the same pace between signal frequency and sampling frequency 通过对交流电信号采样的讨论,指出解决频谱泄漏的问题的基本方法是保证信号频率与采样频率同步。
The available sampling frequencies are : 8 . 0 khz , 11 . 025 khz , 22 . 05 khz and 44 . 1 khz . the frequency can be doubled by selecting the mono / stereo option 16选择的栏表明16比特模式。 16位方式以256 * 256的分辨率提高被抽样的高度的质量, 8位给出的只是被抽样的高度的16 * 16的水平。推荐选择16位方式。