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- Improved wavelet packet algorithm with application on the feature extraction of fault signal 改进的小波包算法及在故障信号特征提取中的应用
- wavelet packet algorithm 小波包算法
- An algorithm based on discrete wavelet transform(DWT) and wavelet packet decomposition(WPD) for speech enhancement was presented. 提出了一种基于离散小波变换(DWT)和小波包分解(WPD)的语音增强算法。
- An audio watermark algorithm based on psychoacoustic model and wavelet packet analysis which is applicable both to stereo and mono audio is presented. 摘要提出了一种基于声学心理模型和小波包变换的的音频水印算法,适用于立体声音频信号和单声道音频信号。
- The wavelet packet is adopted to make denoising pretreatment first, and then the 3D image is restored by the PML algorithm. 采用小波包分析进行去噪预处理,再用PML算法对三维图像进行复原。
- Wavelet Packets Algorithm in Diesel Engines'Vibro-Acoustic Signatures Extraction 小波包算法在柴油机振声征兆提纯中的应用
- This paper uses wavelet packet to decompose signals to various frequency bands( uncertainty principle satisfied), describes the wavelet packet signal extracting algorithm. 本文利用小波包将信号按任意时频分辨率(足测不准原则)解到不同频段的特点,论述了小波包特征提取的方法。
- Thus it proposes the BP neural network fault diagnosis algorithm based on the incompletion wavelet packet transform and energy normalization as preprocessors. 提出了一种基于不完全小波包变换和能量归一化作为预处理的模拟电路故障诊断的BP网络算法。
- In this article, local discriminant basis (LDB) algorithm based on wavelet packet transform (WPT) is utilized to implement feature extraction and emitters recognition. 本文基于小波包变换,采用局部判别基(LDB)方法进行辐射源信号特征提取与识别。
- Wavelet packet transform is used to improve the SNR of the incoherent integral radar echo, and bispectrum algorithm is used for signal detection in this united detecting algorithm, based on the modeling for the through-wall radar echo. 在对穿墙雷达回波信号建模的基础上,用联合算法将非相干累积后的回波信号经过小波包变换提高信噪比,再用双谱算法进行信号检测。
- Firstly, the characters of wavelet transform and wavelet packet analysis were introduced. 首先,简略地介绍了小波变换与小波包分析的特点。
- Resemblance coefficient feature selection approach based on quantum genetic algorithm is applied to select the most discriminatory features from a large number of wavelet packet transform... 仿真实验结果显示,该方法用较少的特征能获得较高的正确识别率,具有一定的参考价值。
- A new algorithm on extraction of anatomical contour in medical image is presented, by combining anisotropic diffusion and wavelet packet decomposition for edge detection of the image. 摘要提出一种医学图像解剖结构特征提取算法,结合异质扩散和小波包分解实现了医学图像分割。
- A new algorithm of zerotree and fractal image is presented by selecting the best wavelet packet basis and different encoding methods were used, i. e. wavelet zerotree and fractal image. 在分析小波包变换、零树编码和分形编码的特点的基础上,通过选择最佳小波包基,对不同子带分别采取零树编码和分形预测编码等措施,提出了一种基于小波包变换的零树分形图像编码算法。
- We choose wavelet and wavelet packet because wavelet transform (WT) itself has the character of multiresolution. 之所以选择小波和小波包变换是因为小波变换本身就是多分辨率的,这使得它比那些固定分辨率的变换,比如STFT(短时傅立叶变换)更加适合人类的生理声学模型。
- The wavelet packet transform can be used to compress seismic data in large batch processing. 在大批量地震数据处理中可以使用小波包变换压缩地震数据。
- Finally,the possibility of wavelet packet modulation application in Digital AM transmission system is discussed. 通过与基于离散傅里叶变换的正交频分复用调制系统进行比较 ,探讨了小波包调制应用于数字调幅传输系统的可能性
- Abstract: We developed a real-time wideband speech codec adopting a wavelet packet based methodology. 摘要:本文论述采用小波包法进行实时宽带语音编码。
- In this paper, a new scattered packet algorithm based on multiple jumpy scans is proposed, which combines the advantages of traditional raster-order scan and recent scattered slices. 针对离散片打包方法的局限性,本文在研究传统的光栅扫描打包方法和新近的离散片方法的基础上,将两者的优点相结合,提出了一种新颖的基于多趟跳跃扫描的离散打包方法。
- In this paper,mean threshold is presented on which wavelet packet de noising is studied. 文中提出了平均阈值的概念 ;并在此基础上研究了小波包去噪的效果 .