-
短时傅里叶变换matlab程序
说明: 短时傅里叶变换的MATLAB实现代码,有效完成时频分析(matlab implementation code of short-time Fourier transform to effectively complete time-frequency analysis)
- 2020-04-10 16:19:15下载
- 积分:1
-
decomposition
运行emd,得到输入信号X的固有模态函数(imf),每列代表着信号X的一阶分量,X就是我们采集的信号。
hhtdn是hht去噪的程序,可以不看,仅看emd 和 findpeaks
wvtdn是wavelet去噪程序,如果只是分解信号,仅用下面的语句即可
[C,L] = wavedec(x_noise,dl,wn);
x_noise就是我们采集的信号,dl是分解的阶数,wn是分解的母小波名称(% Empiricial Mode Decomposition (Hilbert-Huang Transform)
% imf = emd(x)
% Func : findpeaks)
- 2021-04-13 22:28:55下载
- 积分:1
-
fjxhfj
实现db6小波提升变换,对信号进行5层分解和重构。另外被屏蔽的部分为离散小波变换。(Enhance the realization of wavelet transform db6, 5 layers of signal decomposition and reconstruction. In addition to being part of shielding DWT.)
- 2009-06-08 16:58:58下载
- 积分:1
-
wavelet
利用matlab中的小波变换函数,对图像进行小波降噪,并分析降噪效果。(The wavelet transform using matlab function, the image wavelet noise reduction, and analyze the noise reduction effect.)
- 2013-07-22 16:17:51下载
- 积分:1
-
quaternion-wavelet-transform
四元数小波变换。对图像进行四元数小波域变换,并根据变换后得到的四个部分进行幅度相位分析。(Quaternion wavelet transform.Including image analysis via quaternion wavelet domain,such as one magnitude and three angles.)
- 2021-01-18 07:38:43下载
- 积分:1
-
thresholddenoisingbasedonwavelet
小波阈值去噪的经典程序,基于小波变换阈值去噪的MATLAB源代码,效果很好。
(Classic wavelet threshold denoising procedure threshold denoising based on wavelet transform of MATLAB source code, works well.)
- 2010-06-02 11:15:33下载
- 积分:1
-
waveletcompress
自己写的小波图像压缩,包括普通压缩和序列图像压缩(himself wrote of wavelet image compression, including the compression and ordinary sequence Image Compression)
- 2006-10-09 21:46:16下载
- 积分:1
-
wavelet_kompressor
Wavelet compression algorithm. Start by computing a complete wavelet-transform using the cohen-daubechies-fevereau (2,2) biorthogonal wavelet (which incidentally seems to be the same as used for lossless JPEG2000, but they call it a (5,3)?).
- 2014-02-06 22:44:46下载
- 积分:1
-
13-8
波的合成及拍频现象实例,输入两正弦波的振幅、初相位及频率观察波的合成及拍频现象(Synthesis and beat frequency wave phenomena instance, enter the two sine wave amplitude, initial phase and frequency of observation of waves synthesis and beat frequency phenomenon)
- 2009-09-30 08:41:52下载
- 积分:1
-
biterate
二次小波变换的方法用于数字信号码元速率估计(wavelet transform for bitrate estimation of digital modulated signal)
- 2012-06-05 10:29:32下载
- 积分:1