It is a well - compromised solution to both the computation resource problem and measure time problem . compared to the integrate average method , which is found widely used in octave analysis , this algorithm saves much computation . dsp - based real time hardware design is also studied in this thesis 本文提出了基于多分辨谱估计理论的高分辨率倍频程分析算法，能够在普通的dsp上实现高精度的倍频程分析，与传统的时域积分平均算法相比，在计算效率上有着明显的优势。
Without much theoretical deduction in this dissertation , we focus mainly on the several characteristics of wavelet , such as the localization in both the spatial and the frequency domain derived from the compact support in the two domains ; the rnultiresolution representation property ; and the octave divided frequency property , etc . after a brief overview of the principles and methods of image compression , video coding algorithms are introduced including 3 - d wavelet video coding and 2 - d wavelet video coding . based on the above , the research of this dissertation consists of three aspect : firstly , the 3d - spiht algorithm is modified which optimizes bit allocation 具体说，本论文包括以下内容：首先，本文分析介绍了小波理论，文中没有过多的理论推导，而是从小波具有的一些特性，如时频局部性、多分辨率分解特性和倍频程频带分解特性入手，力求对小波变换有一个宏观的了解。其次，介绍了基于小波的图像编码的原理和常用的编码方法。最后，介绍了基于小波的视频编码的方法，一种是基于3 ? d小波视频编码，另一种是基于2 ? d的小波视频编码方法。
As a result , the ultra - wideband antenna must be able to radiate and receive the short pulse signals without distortion , in other words , the ultra - wideband antenna has to own several octave impedance bandwidth or more , and stable phase center , which enables the ultra - wideband antenna to transmit and receive short pulse signals without distortion 这就要求超宽带天线具有辐射和接收时域短脉冲信号的能力,即拥有几个甚至十几个倍频程的阻抗带宽,同时天线应具有稳定的相位中心以保证不失真地收发短脉冲信号。
Octave analysis is widely used in acoustic signal analysis , whose resolution needs to be enhanced greatly in order to describe the sound signal in more detail . today multi - channel real - time octave analysis may need to be processed at 1 / 48 - octave or even 1 / 96 - octave , which is impossible for some platforms unless more expensive hardware enhancement provided . the high - resolution octave analysis algorithm provided in this thesis is based on the multiresolution spectrum estimation theory 倍频程分析是声学分析的一个重要工具，随着人们对声音信号频率成分刻划要求的提高，对倍频程分析的频率分辨率要求也越来越高，目前要求实现多通道同时处理的1 / 48甚至1 / 96的倍频程分析，使得传统算法很难实现或实现的硬件成本很高。
