音調制 的英文怎麼說
中文拼音 [yīndiàozhì]
音調制
英文
tone modulation-
The job of the decoding system is to demodulate and decode the data string and convert it to music
而解碼系統的工作就是將數據串進行解調制和解碼,使之還原為音樂。Be responsible for research of development of powersupply, light engine boards, tv board, system controller board, audio board
負責調研和開發電源、光機板、電視板、系統控制板和聲音控制板等。The calls of non - passerine are some kinds of monotonous dull vocalizations with the characteristics of low and deep frequency, single syllable, low basic frequency and with no ability of modulation in frequency and amplitude. most of the calls are monotonous and low quality mainly based on the basic song. compare the vocal of sub - oscine passerine with non - passerine, they have some similar aspects, but the former possesses of stronger capability of vocal control
非鳴禽的叫聲低沉而單調,音節種類單一,基本音頻率低,缺乏頻率調制以及幅度調制的能力,叫聲的品質因數很低,不悅耳,大多為以基本音為主的單音調低音品叫聲,亞鳴禽的叫聲與非鳴禽近似,但在控聲能力方面又有所提高。The modulation of sound properties over a wide range of time scales is one of the most obvious characters of oscine passerine ' s vocal, whose song contains many different kinds of syllables that consist of many more multiple song phrases. in oscine passerine, ipsilateral projections of ra to nxiits innervates the ipsilateral syringeal muscles exactly, and thus they have strong ability of vocal control with variable tones, high frequency and higher lever of quality. as a result, the songs sound well
鳴禽鳴囀的最大特點之一便是其單次鳴唱時間長,鳴唱所包含的音節數量和音節種類繁多,因而由這些音節所組成的句型結構也是復雜多樣富於變化,且由於nxiits嚴格的側別控制(每一側核團只支配同側鳴肌) ,使其具有更強的控聲能力,其鳴聲音調變化幅度大,頻率高,品質因數大,音色好,因而其鳴聲也悅耳動聽。Compared with non - passerine, they appeared longer syllable length, higher basic frequency and more viable frequency ranges. though the amplitude modulation properties enhanced their vocal production, the type of syllable is still stable and less of variety. so the phrase consisted of syllables are comparatively few and changes of the tone are relatively less
且表現出很強的頻率調制特性和特有的幅度調制特性,相對的音節時程比較長,基頻較高且頻率變化范圍較大,所特有的幅度調制特性更增加了其控聲的能力,但其音節的種類仍很單一,缺乏變化,由音節所組成的句型較少,音調變化幅度不大,因此,其叫聲質量盡管較非鳴禽有所改善,但相對鳴禽而言卻又遠遠不如。Characteristics of pulse code modulation for voice - frequencies
音頻脈沖編碼調制特性6am and 18fm stations memory balance fader volume tone control
2 .音量平衡高低音調控制Audio - visual, video and television equipment and systems - control, synchronization and address codes - method of operation for pulsed cue tone control systems for two still projectors
視聽視頻電視設備及系統.第5部分:控制同步和地址碼.第2節:雙片式投影儀脈沖音調控制設備操作方法However according to the view of acoustics, click includes mixed frequencies, so further studies are necessary to investigate the physiological significance of amygdaloid modulating effect on the ascending auditory information at the cortical level. in this paper we firstly observe the characteristics of the acoustic response of neurons in a - i evoked by pure tone ; then investigate the influence of la stimulation on the acoustic response of these neurons and the physiological significance of such influence ; revea l the neural pathway mediating this effect with the neurohistological method ; and study the neurotransmitter and its receptor participating in this effect
本文採用電生理學方法考察大鼠皮層a區神經元純音反應特徵,觀察杏仁外側核( la )對a區神經元聲反應的影響,運用神經組織學方法揭示介導這一影響的神經環路,採用多管微電極記錄結合微電泳技術的方法研究參與這種影響的神經遞質及受體,進一步探討了這種調制性影響的生理學意義。For phonetic signal modulation, if the pass band range of the band pass filter ( bpf ) is 300hz - 3400hz, the anti - noise properties of laser are approximately independent of bias current and parameters of the cavity ; when the pass band range of bpf increases to a certain degree, modulating bias current and parameters of the cavity can improve the anti - noise properties of laser
對語音調制情況,如帶通濾波器的通帶范圍取為300hz - 3400hz ,則激光器的抗噪聲性能基本不依賴于偏置電流和腔內參數;當帶通濾波器的通帶范圍增大到一定程度,調整偏置電流和腔內參數可以實現半導體激光器的高抗噪聲性能。12am and 18fm stations memory electronic volume balance treble bass controls
3 .電子音量平衡高低音調控制The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively
建立了jtids的收發終端的數學模型,分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能,提出較佳的干擾方法和干擾碼型,並進行模擬模擬;分析了gps的信號格式,建立了gps的原理框圖模型、信號數學模型,並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較,提出相對較佳的干擾方法,並做了計算機模擬,針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析;建立了link11和link4a數據鏈調制解調數學模型,對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析,最後對干擾情況進行了模擬模擬。In 1992, a. enders and g. nimtz researched the propagation of microwave signal through several different cutoff waveguides with hp8510b network analyzer ( na ) system and hp70820 transition analyzer ( ta ) system. since 1990s, emig, martin and landauer have been investigating the propagation of electromagnetic pulse through a waveguide with piecewise different dielectric constants
1992年,德國科隆大學的enders和nimtz採用hp8510b網路分析儀系統和hp70820轉換分析儀系統研究了不同結構的截止波導中的信號傳播,並計算出調制音樂穿過截止波導的時間小於其在真空中的傳播時間。That noise fm signal emalates tv sound fm signal researchs above two question about correlative detection and restrainning sidelobe. the research ' s result is compared with linear fm emulational research ' s
用噪聲調頻信號對電視伴音調頻信號進行模擬研究上述提到的相關檢測和旁瓣抑制問題,並與線性調頻信號模擬研究相比較。Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論;然後完成了包括數據格式,調制方式,糾錯碼方式,交織器和擾碼器等部分的中頻數據機通道設計;接著著重介紹了系統中使用的音頻壓縮演算法cvsd (連續可變斜率增量調制)的原理和實現,以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。The present paper deals with the water - filling bit allocation algorithm on the base of discrete multi - tone
摘要在離散多頻音調制原理的基礎上,研究注水流比特分配演算法。An optimal design method for the prototype filter design of the filtered multitone modulation system is proposed
摘要給出了濾波多音調制系統的原型濾波器優化設計方法。We study the theory of asymmetric digital subscriber loop ( adsl ), important in discrete multi - tone ( dmt ) modulation that is the usual international encoder in adsl
本文系統研究了非對稱數字用戶線的理論,重點研究了國際上對其通用的編碼方式?離散多音調制( dmt )技術。This method can not only minimize the stopband energy of the prototype filter, but also determines the inter symbol interference power and the transition band energy, which can be used to design prototype filters for both the critically sampled fmt system and the non - critically sampled fmt system
該方法不僅可以最小化原型濾波器的阻帶能量,還界定了符號干擾功率、過渡帶能量,適用於嚴格采樣和非嚴格采樣濾波多音調制系統。In addition, about the process of practice in design the adsl board, we solve the questions such as the initialization and connection of adsl etc. the main works in the paper could be described as follow : study the theory of adsl and dmt, design and debug the high density 32 line adsl board for co. at present, the adsl board has passed all strict tests
同時,在開發的過程中,運用理論知識解決了adsl初始化和其建立連接等問題。論文的主要工作:深入研究adsl理論及其離散多音調制。設計、並實際開發了高集成度32路adsl局端業務板。分享友人