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filters-used-to-heart-noise
- 读取心电数据,画出心电数据的波形和频谱图,观察心电数据的频率段范围 2.分别添加以下噪声(至少3种),画出噪声信号的频谱图,验证设计的噪声是否符合要求 (1)基线漂移 基线漂移通常为频率非常非常低的噪声信号,添加了基线漂移后的心电信号可以观察到原始信号整体的上下浮动 (2)高频噪声 高频噪声可以设计为大于100Hz的随机信号 (3)呼吸噪声 人体的呼吸带来的干扰大约在0.1Hz~0.25Hz (4)50HZ工频信号干扰(必做) 50Hz工频信号
signal_send01
- 对正选信号进行仿真,画频谱图,并分别在时域和频域对信号延迟。-Positive selection signal delay simulation
signal_send
- 对正选信号仿真,画频谱图,并分别在时域和频域对其延迟-Positive selection signal simulation painting spectrogram, and in the time domain and frequency domain of its delay
florier1
- 傅里叶变换在MATLAB中的实现,对正选信号仿真,画出其频谱图。-Fourier transform in MATLAB realization of positive selection signal simulation, draw the spectrogram.
fft
- 求一个信号的频谱分布,并求某一帧的频谱图。-Seeking a signal of the spectrum distribution, and the frequency spectrum diagram of the requirements of a certain frame.
FFT
- 是信号与系统课程的课程设计,旨在熟悉FFT 的计算过程,结合DFT 物理意义和实验结果加深 对傅立叶变换的理解。文章首先用MATLAB 对一个简单信号进行FFT 仿真,得出频谱图;其次完成了FFT 的C 语言实现,结合MATLAB 作图及数据处理功能得出了C 实现下的FFT 结果;最后,讨论分析实验结果。-Curriculum design, signals and systems courses designed to familiar FFT calculation process, t
windowfilter
- 采集一段语音信号,分别用矩形窗、汉纳窗、汉明窗、布莱克曼窗对采集的原始语音信号进行窗宽为N 的加窗FFT变换,得到利用不同窗函数对语音信号进行加窗FFT变换后的信号频谱图。观察不同窗函数的加窗效果,分析窗函数的适用情况。-Collecting a voice signal, respectively, with a rectangular window, Hanna window, Hamming window, Blackman window on the original speech s
simpleCUFFT
- 该源码主要是实现对图像的二维傅里叶变换,可以显示器频谱图,以及傅里叶逆变换,然后显示原图-The main source of the realization of two-dimensional Fu Liye transformation of the image, can display the spectrum, and Fu Liye transform, and then displays the original
fft
- fft 频谱 采用fft 实现载波频谱图-FFT spectrum using fft carrier spectrogram
frequency-spectrum
- 该程序用于测量频谱。比如可以从扬声器上产生白噪声,用麦克风接收,接收到的数据经过处理便可以生成一个频谱图,程序中带有滤波器。-The procedures used to measure the spectrum. White noise, for example, can be generated from the speaker with microphone receiver, the received data can be treated to generate a spectrum
ex10
- 用fdkmod函数画出采用4-FSK调制的0:3的调制信号波形,以及调制信号的频谱图-4-FSK modulation with fdkmod function draw 0:3 modulated signal waveform, and a modulation signal spectrum FIG.
FFTbianhuan
- 对已知的以为数据进行FFT变换,得到数据的频谱图,进而可分析出幅值和相角。-Known that the data FFT, the frequency spectrum of the data, which can be analyzed magnitude and phase angle.
exp2
- 录制汉语拼音 a1(阴平)的发音。分别提交你所能录制的基音频率最高和最低的两个 录音文件。文件名为: 学号_a_h.wav(高音文件)和学号_a_l.wav(低音文件)。(用MathLab 编程) 1)分别对这两个文件进行观察分析。找出最高和最低基音频率位置,分别显示此时它们的 局部波形和短时频谱(按照最大值为100 归一化显示)。 要求:在时域波形上标出基音周期,并算出数值(精确到一个采样点)。在频域图上标出 基音频率。注意:标出分析波形的起始位置(精确到采样点位置),
wushizhen
- 对信号分别无失真频率和失真频率带通采样得到采样后的频谱图-Signal distortion frequencies and distortion frequency bandpass sampling frequency spectrum after sampling
leidaxinhaoyuchuli
- 对雷达信号进行预处理。输入设定的LFM信号,进行数字正交解调以及匹配滤波最后是相参积累。从而得到LFM信号频谱图,解调后的频谱,想干积累输出等结果。 -The radar signal preprocessing. Input set of LFM signal, digital quadrature demodulation and matched filtering the last coherent integration. LFM signal spectrum, the demod
mainn
- 用于绘制滚动轴承故障的频谱图和包络解谱图,从而判断轴承故障-Used to draw the rolling bearing fault frequency spectrum and spectral envelope solutions, in order to determine bearing failure
msk
- msk调制解调过程源程序,包括二进制信号、msk信号、msk调制解调信号,以及频谱图-msk modulation and demodulation process source code, including binary signal, msk signal, msk modulation and demodulation of signals, and spectrum
ASK
- 改程序实现了2ASK的调制与解调功能,可以分析波形图频谱图-Reform program to achieve the 2ASK modulation and demodulation functions, can be analyzed waveform spectrum
PSK
- 该程序实现了PSK的调制与解调功能,可以分析频谱图-The program achieved a PSK modulation and demodulation functions, spectrum can be analyzed
pinpu
- 对一段语音信号进行频谱分析,经过傅里叶变换可得语音信号频谱图,从而可知语音信号都是分布在低频区域-A voice signal spectrum analysis, Fourier transformation can be obtained through the voice signal spectrum, which shows that the voice signals are distributed in the low frequency region