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- harmonic wavelet packet transform 谐波小波包变换
- harmonic wavelet packet 谐波小波包
- Harmonic wavelet analysis can extract the singular components in the non-stationary signal effectively. 摘要谐波小波分析可有效提取非平稳信号中的奇异成分。
- 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。
- General harmonic wavelet is an ideal band-pass filter,due to selecting frequency range discretionarily. 广义谐波小波可任意选取频带,是理想的带通滤波器。
- 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。
- The fault characteristic of rolling bearing can be extracted via integrating general harmonic wavelet and resonance demodulation technique. 将广义谐波小波结合共振解调技术,可较好地提取轴承故障激发的共振信息。
- 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。
- Harmonic wavelet has a finer frequency refinement f unction than the others.An example which can demonstrate superiority of harmonic wavelet in filtering is presented. 基于谐波小波函数较别的小波函数具有良好的盒形谱特性考虑，将谐波小波函数用于数字信号滤波，并通过模拟算例和实例给予验证。
- 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 .
- The generalized harmonic wavelet can analyze signals in random frequency band, and ensure the frequency resolution unchangingly by a generalized harmonic wavelet transformation. 摘要将二进谐波小波推广到广义谐波小波后，能够对信号的任意频段进行分析，且能够保证信号经过广义谐波小波变换后其频率分辨率保持不变。
- It has been proved that the wavelet packet de noising is an effective method prior to wavelet de noising. 仿真结果表明 ,基于平均阈值的小波包去噪是一种有效的去噪方法 ,其效果优于小波去噪
- Firstly, the optimal WPD (wavelet packet decomposition) with the fuzzy criterion is obtained. 首先，利用模糊准则得到最优小波包分解；
- The paper has researched the remote sensing image wavelet packet fusion based on the ARSIS concept. 摘要研究了基于ARSIS概念的遥感影像的小波包融合方法。
- The theory of wavelet packet transform and the method of voltage signal analysis with wavelet packet was presented. 简述了小波包变换的基本原理及利用小波包对电压信号进行分解的方法。
- Flexibility and the precise ability of local analysis in wavelet packet analysis during signal denoising are analyzed. 分析了小波包分析在信号去噪中所具有灵活精确的局部解析能力；
- It is based on a combination of frequency shifts with the undecimated wavelet packet transform. 该算法是将频移与非抽取小波包变换结合起来的一种方法。
- Objective To explore the effect of band power and wavelet packet entropy in the recognition of hand imagery. 目的探讨脑电信号频带能量和小波包熵在识别左右手想象运动中的作用。
