讀入一段數(shù)據(jù),采用lempel-Ziv算法進(jìn)行信源編碼
標(biāo)簽: 數(shù)據(jù)
上傳時(shí)間: 2014-01-01
上傳用戶:變形金剛
This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains "space" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.
標(biāo)簽: initiated described modified slightly
上傳時(shí)間: 2014-01-09
上傳用戶:sk5201314
Welch法:Welch法對(duì)Bartlett法進(jìn)行了兩方面的修正:一是選擇適當(dāng)?shù)拇昂瘮?shù)w(n),并在周期圖計(jì)算前直接加進(jìn)去,加窗的優(yōu)點(diǎn)是無論什么樣的窗函數(shù)均可使譜估計(jì)非負(fù)。二是在分段時(shí),可使各段之間有重疊,這樣會(huì)使方差減小。
上傳時(shí)間: 2016-03-03
上傳用戶:xcy122677
關(guān)于功率譜估計(jì)的,周期圖法,自相關(guān)法,bartlett法和welch法,還有一個(gè)復(fù)倒譜估計(jì)的代碼
標(biāo)簽: bartlett welch 功率譜估計(jì) 代碼
上傳時(shí)間: 2014-01-19
上傳用戶:CSUSheep
用Fourier變換求取信號(hào)的功率譜---周期圖法 用Fourier變換求取信號(hào)的功率譜---分段周期圖法 用Fourier變換求取信號(hào)的功率譜---welch方法 功率譜估計(jì)----多窗口法(multitaper method ,MTM法) 功率譜估計(jì)----最大熵法(maxmum entmpy method,MEM法) 功率譜估計(jì)----多信號(hào)分類法(multiple signal classification,music法)Fourier transform to strike a signal to the power spectrum - the cycle of plans Fourier transform to strike a signal to the power spectrum - Sub-cycle Method Fourier transform to strike a signal to the power spectrum --- welch method Power spectrum estimated more than window ---- Law (multitaper method, MTM) ---- Power spectrum estimate of maximum entropy (maxmum entmpy method, MEM) ---- More than the estimated power spectrum signal classification (multiple signal classification, music)
標(biāo)簽: Fourier welch 變換 信號(hào)
上傳時(shí)間: 2016-07-16
上傳用戶:wqxstar
有直接法,間接法,Bartlett法,Welch法
上傳時(shí)間: 2016-09-30
上傳用戶:225588
功率譜 welch 方法 there is a simple demo for non parameteric spectral estimation methods
標(biāo)簽: parameteric estimation spectral methods
上傳時(shí)間: 2014-01-12
上傳用戶:hakim
MATLAB環(huán)境下的直接法 間接法和welch法源程序和譜密度函數(shù)的曲線比較
標(biāo)簽: MATLAB welch 環(huán)境 源程序
上傳時(shí)間: 2017-01-12
上傳用戶:fanboynet
最大熵法與Welch法估計(jì)的功率譜的比較。 多信號(hào)分類法估計(jì)的功率譜。
上傳時(shí)間: 2013-12-25
上傳用戶:一諾88
Welch法得到的功率譜估計(jì)。 設(shè)計(jì)濾波器對(duì)白噪聲濾波后的功率譜。
標(biāo)簽: Welch 功率譜估計(jì) 功率譜 濾波器
上傳時(shí)間: 2014-11-28
上傳用戶:epson850
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