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freqz_m
- 求取系统的绝对幅度响应、相对的db值幅度响应、相位响应和群延时响应的函数 ％ ％db为相对振幅(dB) ％mag为绝对振幅 ％pha为相位响应 ％grd为群延时 ％w为频率样本点向量 ％b为Ha(z)分子多项式系数(对FIR而言，b=h) ％a为Hz(z)分母多项式系数(对FIR而言，a=1) ％-strike rate system in response to the absolute and relative value range db respons
wigner4
- 对于淹没在复高斯白噪声中的信噪比为-5dB二次调频信号，在矩形窗长为256的情况下，滤波器组时频检测仿真-for drowned in the complex Gaussian white noise in the signal-to-noise-dB second FM signal in the long rectangular windows of the 256 cases, the time-frequency filters Detection Simulation
TSM
- Draws the magnitude of vector x in the time domain, and draws its power spectrum in dB where the number of frequency points is npointsDFT.
signal_analyzer
- 最近看到有人提问怎样用FFT实现频谱分析，我认为能够进行到频谱分析的人，对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程，发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输
window_function
- the magnitude responses in dB of the window functions in the frequency domain
fftbianhuan
- test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。-test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as t
ad9854c
- With the program AD9854C.exe one can set and tune the frequency in CW-mode. For use as a receiver LO also IF can be given and the both possible receiving frequencies are printed on the screen. The level in Q-outputs can be varied by giving the wanted
p02
- digital band-pass filter with a bandwidth of 100 Hz, mean frequency 250 Hz, 0.1 db
p02
- digital band-pass filter with a bandwidth of 100 Hz, mean frequency 250 Hz, 0.1 db
Doppler
- A signal is transmitted using a carrier frequency of 900 MHz. It is transmitted through a multipath channel which can be modelled as Rayleigh fading. Assumingthe Dopper spread as 10Hz and the number of multipaths as 10, generate the Rayleigh
signal_analyzer(1)
- 主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。 -Main Content (signal_analyzer.rar) as follows: test1.txt the fir
zr
- 用窗函数法设计一个能对模拟信号进行滤波的线性相位FIR低通滤波器。抽样频率为 kHz，通带截止频率为 kHz，阻带截止频率为 kHz，要求阻带最小衰减 dB。为了降低运算量，所设计滤波器的阶数要尽可能的低-With the window method to design a filter to the analog signals of linear phase FIR low-pass filter. Sampling frequency is kHz, passband cutoff fre
zr
- 用双线性变换法设计一个Butterworth低通滤波器，要求其通带截止频率100Hz，阻带截止频率200Hz，通带衰减小于2dB，阻带衰减大于15 dB，采样频率为500 Hz。-Using bilinear transformation to design a Butterworth low-pass filter, requiring that their pass-band cutoff frequency 100Hz, stopband cutoff frequency 200Hz, p
11
- 为提高语音端点检测系统在低信噪(0 dB 以下) 下 检测的准确率, 提出了一种基于谱熵的端点检测算法。将每 帧信号分为16 个子带, 选取频谱分布在250～ 3. 5 kHz 并且 能量不超过该帧总能量90 的子带, 计算经过语音增强后的 子带能量以及各子带信噪比, 根据各子带信噪比的不同调整 其在整个谱熵计算过程中的权重, 然后平滑谱熵, 以最终的 谱熵作为端点检测的依据-To improve endpoint detection system in the low
S259M
- This standard describes a serial digital interface for 525/60 and 625/50 digital television equipment operating with either 4:2:2 component signals or 4fsc composite digital signals. This standard has application in the television studio over
Design-of-UWB-diversity-antenna-for-PDA-applicati
- Two elements diversity planar antenna for a multiple-input multiple-output application is proposed. By adopting two Y-shaped radiators, the antenna provides wideband impedance matching characteristic over the desired frequency band. To reduce the
Lossy-Counting-Java
- is the Java implementation of the Lossy Counting Algorithm that you can find at: http://www-db.stanford.edu/~manku/papers/02vldb-freq.pdf The LossyCountingAnalyzer program takes an input stream made of text and compute the words with the highest
05441004
- Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power
FirstFollow
- Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power
frequency
- KEY FEATURES Resolution of 230,000 Counts (Peak-to-Peak) Offset Drift: 5 nV/8C Gain Drift: 2 ppm/8C Line Frequency Rejection: >150 dB Buffered Differential Inputs Specified for Drift Over Time Operates with Reference Voltages of 1