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行业发展研究 持续时间震级计算vb源码。利用地震波持续时间同地震震级的相关性来反映震源强度
持续时间震级计算vb源码。利用地震波持续时间同地震震级的相关性来反映震源强度，这就是持续时间震级(Duration Magnitude)
matlab例程 the programs are an introduction to DSP ,the programs illustrate the frequency response ,impulse res
the programs are an introduction to DSP ,the programs illustrate the frequency response ,impulse response and magnitude response
软件设计/软件工程 This application note considers the design of frequency- selective filters, which modify the freque
This application note considers the design of frequency-
selective filters, which modify the frequency content
and phase of input signals according to some specification.
Two classes of frequency-selective digital filters
are considered: infinite impulse response (IIR) and finite
impulse response (F ...
软件设计/软件工程 This application note considers the design of frequency- selective filters, which modify the freque
This application note considers the design of frequency-
selective filters, which modify the frequency content
and phase of input signals according to some specification.
Two classes of frequency-selective digital filters
are considered: infinite impulse response (IIR) and finite
impulse response (F ...
DSP编程 This sample program generates two sine waves called X and Y. It will then calculate the normalized
This sample program generates two sine waves called X and Y.
It will then calculate the normalized magnitude and phase of
the two waveforms using the following formulas:
Mag = sqrt(X^2 + Y^2)/sqrt(GainX^2 + GainY^2)
Phase = (long) (atan2PU(X,Y) * 360)
The program will prompt the ...
仿真技术 fft analysis
      Use
the fast Fourier transform function fft to analyse following signal. Plot the original signal, and the magnitude of its
spectrum linearly and logarithmically. Apply Hamming window to reduce the
leakage.
 
.
 
The hamming window can be coded in Matlab ...
论文 基于频率插值的4.0kbps 语音编码器的性能和设计（英文）
The 4.0 kbit/s speech codec described in this paper is based on a
Frequency Domain Interpolative (FDI) coding technique, which
belongs to the class of prototype waveform Interpolation (PWI)
coding techniques. The codec also has an integrated voice
activity detector (VAD) and a noise reduction capabi ...
书籍 Personal+Networks+Wireless+Networking
Recent decades have shown a tremendous expansion of the Internet. The number of
connected terminals has increased by orders of magnitude, traffic has grown exponen-
tially, coverage has become ubiquitous and worldwide, and today’s sophisticated Web
2.0 applications are increasingly providing servic ...
技术资料 微波直接射频调制技术研究
直接调制将基带信号直接转换为射频信号，不需要二次频率变换，与上变频方式相比系统结构简单，降低了对滤波器的要求，具有体积小，重量轻，成本低等明显的优点.1/Q正交调制的关键指标是误差矢量（EVM：Error Vector Magnitude）.本文研究的是微波波段的直接调制技术。利用基带对L波段和s波段几个不同的载波进行直接调制。首 ...