| 1. | The simulation for signal frequency spectrum analysis based on fast fourier transforms
基于快速傅立叶变换的信号频谱分析仿真 |
| 2. | A method of software synchronization based on first - order hold to digital signal ' s spectrum coding for data transmission
数字信号频谱编码传输中基于一阶保持的软同步方法 |
| 3. | The text introduces the method of analysis and design of this measurements on the platform of digital oscillograph
本文即介绍了在数字示波器的平台上实现信号频谱分析的方法及设计。 |
| 4. | But the bandwidth of the raw radar video is too wide to transmit directly in the common communication channel
但是雷达原始视频信号频谱很宽，要求传输设备有很宽的通频带，而且效率低、投资大。 |
| 5. | In the digital intermediate frequency project , the intermediate frequency signal is converted to digital signal directly into the dsp chip , then it is be processed by dft
数字中频方案将中频信号直接通过a / d转换后送入dsp芯片进行dft变换，最后得到待测信号频谱的采样序列。 |
| 6. | Experimental results showed that the composites exhibited multiple damage modes and the characteristics of ae signals were remarkably affected by damage mechanism
实验分析表明，拉伸过程中破坏机制对声发射信号的特征具有显著影响，不同损伤模式的信号频谱特征存在明显的差异。 |
| 7. | Abstract : speech signal spectrum analysis is the time - varied spectrum analysis . fft technique on speech signal spectrum analysis are discussed in detail in this paper
文摘:针对语音信号频谱分析实际上是时变频谱分析的特性，详细地讨论了用fft技术对语音进行频谱分析过程中的方法问题。 |
| 8. | During the research , ultrasonic signal testing system was designated by adopting transform the average value of function to nought , optimizing of collection frequency and transducer frequency
在研究过程中，采用零均值化、优化采样频率与探头频率的匹配等对超声信号频谱分析系统进行了标定。 |
| 9. | According to the carrier wave leakage and mirror wave interference in the signal generation , this paper analyzes the source of waveform distortion and its influence to signal spectrum and pulse compression result
针对生成信号中存在的载漏和镜像等失真,本文对波形失真来源及其对信号频谱及脉压结果的影响进行了全面分析与仿真。 |
| 10. | Compared with the traditional methods of artifacts elimination , ica , a kind of spatial filter , does not be restricted by the case of spectrum overlapping , and have a good reservation of useful detail signals
此外， ica这种空间滤波器不受信号频谱混迭的限制，消噪的同时能对有用信号的细节成分做到很好的保留，很大程度上弥补了时频域方法的不足。 |
