Video signal representation includes three aspects : the visual representation, transmission and digitalization 視頻信號的表現(xiàn)包括三個方面:視覺表現(xiàn)、傳輸與數(shù)字化。
Part i deals with background material in the acoustic theory of speech production, acoustic-phonetics, and signal representation 第一部分講述有關(guān)語音生成的聲學(xué)理論的背景知識,聲學(xué)-語音學(xué),及信號表達。
As compared with the solution using pulse envelope representation, the propagation equation using complex analytic signal representation reveals different spatiotemporal behaviors such as spectrum redshifting, narrowing, and pulse broadening, etc . 2 復(fù)解析信號解會出現(xiàn)光譜紅移、變窄、脈沖變寬等與脈沖包絡(luò)解不同的時空特性。
The four-parameter basis functions decomposition of time-frequency signal representation is presented based on the characteristics of doppler frequency of the radar echoes, thereby dopplerlet transform is introduced 根據(jù)接收到的雷達目標(biāo)回波信號的多普勒頻率特性,提出用4參數(shù)基函數(shù)的時頻信號表示法,從而引出多普勒小波變換的概念。
It is well known that discrete wavelet transform yields a shift variant signal representation, which means that a simple integer shift of the input signal will usually result in a nontrivial modification of the decomposed coefficients 近年來,基于小波變換的多傳感器融合得到了廣泛的關(guān)注與研究。但小波變換由于其變換過程中存在2取1的抽樣過程,使得小波變換不具備移不變特性。
In past decade, scalable video coding, allowing partial decoding at a variety of resolution and quality levels from a single compressed stream, is widely considered as a promising resolution for efficient signal representation and transmission in a network environment, such as wireless-net, internet 經(jīng)過近十年的研究,可擴展視頻編碼被認為是一種在無線、因特網(wǎng)等網(wǎng)絡(luò)環(huán)境下進行視頻傳輸?shù)木幋a解決方案,它僅用一個可調(diào)整的碼流就可以滿足不同用戶的個性化需求。