音頻採集 的英文怎麼說
中文拼音 [yīnbīncǎijí]
音頻採集
英文
audio capture-
When we designed the system, we considered some key factors such as the system must deal with and store a great deal video and audio data, the capability of the hard disk in the server and client, hi the part of video compression, we choose the currently mpeg - 4 video constringent card to complete the collecting and compression of the video and audio signals
在論文研究與實用系統設計中，充分關注到大量視音頻數據的處理、存儲以及服務器和遠程客戶端的硬盤容量等關鍵因素，視音頻壓縮採用了最新的mpeg - 4視音頻壓縮卡進行視音頻信息的採集和壓縮。This paper begins with the architecture of vfw, and then discusses the key technologies on av and the solution for capturing, playing streaming media
文章從微軟vfw軟體開發包的體系結構出發，重點討論了多媒體音視頻採集、回放等關鍵技術及實現方法。Audio, video and audiovisual systems ; interconnections and matching values ; part 3 : interface for the interconnection of eng cameras and portable vtrs using non - composite signals, for 625 line 50 field systems
音頻視頻和視聽系統.互連和匹配值.第3部分:電子新聞收集攝影機和採用625行50場系統復合消隱圖象信號的便攜式磁帶錄象設備介面In the thesis, a high efficiency linear am amplifier is developed, which is based on the basic theory of eer linearization amplifier technique [ 1 ]. the high efficiency digital audio amplifier technology [ 2 ] is adopted to develop the power supply modulator and the class - d switching amplifier technology [ 3 ] is adopted to develop the high efficiency rf amplifier
本論文利用eer （ envelopeeliminationandrestoration ）線性功放技術的基本原理[ 1 ] ，採用數字音頻功放技術[ 2 ]實現高效率電源調制器，採用class - d開關放大技術[ 3 ]實現高效率載頻放大器，開發了一個集am調制和放大於一體的高效率線性功率放大器。The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on
主要包括：消除近地表因素對資料採集的影響，包括靜校正和噪音壓制技術等；疊前拓寬地震資料領帶，包括振幅補償和疊前反褶積技術等；藉助高精度速度分析、剩餘靜校正和高次項nmo技術，通過多次覆蓋疊加，消除資料中隨機噪聲干擾、提高資料信噪比，尤其是高頻端反射信息的信噪比，改善高頻反射和弱反射信號信噪比，提高「高頻反射死亡線」 ；疊後有限反射頗帶識別、抬高優勢頻率等。National authoritative organization, get software product register the certificate, system this can u - sed in the building are controlled, the computer lab concentrate on being controlled, industrial cont - rol, long - distance data picture sound are controlled, have already used in a large amount in every p - rofession and trade, such as customs, electric power, insurance, bank, government bodies, factory, etc.
公司研發部自主開發的zlt - monitor遠程監控系統組態平臺可將數據流視頻流音頻流共一個平臺集中監控， c s b s結構，同時採用rs485技術和lonworks技術，國內屬于首創，該系統經國家權威機構測試登記，獲得軟體產品登記證書和版權登記證書，該系統可用於數據流視頻流音頻流的遠程集成監控管理，已在機房集中監控智能樓宇監控電力遠程監控物流遠程監控工業控制遠程監控等領域上千個項目中大量使用。In addition, the author puts forward that the eggs could be recognized based on the difference in the frequencies of their prompted sounds. because the eggs " prompted sounds are lied on low frequency bands, the microphone and sound amplifier that have excellent duration response should be used. the output signal from the sound amplifier is transferred to data signal by a / d card before it is put into computer
蛋品激勵出的聲音主要集中在低頻段，因此選擇在低頻段有好的頻率響應特性的麥克風和放大電路；放大輸出信號通過a / d採集板變換成相應的電壓數值信號送入計算機，對離散的信號數據進行傅立葉變換得到它的頻譜圖和各頻段能量分布圖；而後將能量分佈特徵數據作為神經網路的輸入值，這樣，好蛋和破損蛋的模型就建立起來。The characteristic and key technologies of the system are as follows : ( 1 ) in realizing the live broadcast of audio and video, the problem of immense multimedia data and low networks bandwidth utilization ratio is solved by using mpeg - 4 as format of audio and video data. audio and video data are collected by video card cv500 which developed by beijing sum tone company ; meanwhile, the contradictory between the delay of networks transmitting and the quality of the image is well solved by setting a " bi - buffer area "
系統實現中解決的關鍵問題和特色主要有以下幾個方面： （ 1 ）在視音頻直播功能的實現中，通過使用北京算通公司的cv500視頻採集卡和cv500sdk進行視音頻數據採集，並採用當今最新的圖像和語音編碼壓縮標準mpeg - 4作為視音頻數據的採集格式，既保證了圖像的質量，又大大縮減了視音頻所佔的帶寬，從而解決了多媒體數據量大、網路帶寬利用率低的問題；同時，通過設置環形緩沖區的辦法來調和網路傳輸延時與圖像質量之間的矛盾，取得了較好的效果。It was demonstrated that this sort of load - control apparatus has superior performance. we used a electric transmitter as the transducer to collect the sound signal, using the daq toolbox of the matlab to achieve the collection of the sound signal, and using the dsp toolbox of the matlab and the sound - launch technology to analyze the time - domain characteristic and the frequency - domain characteristic of the signal, chiefly analyze its short - time average amplitude, its short - time over - zero ratio and its estimate of the power chart and the average - period chart
實驗中使用了駐極體話筒作為球磨機聲音拾取傳感器，利用matlab中的數據採集（ daq ）工具箱實現對磨音的採集，利用matlab信號分析（ dsp ）工具箱和聲發射技術對磨音進行時域和頻域分析，主要分析磨音的短時平均幅度和能量、短時平均過零率、功率譜估計和平均周期圖。Comparing with conventional nyquist converters, - converters greatly release the requirements for high performance of analog circuit and precisely matched components. additionally, these converters exploit the enhanced speed, circuit density and low cost of modern vlsi technologies. currentlly, - adcs have been widely used for audio a / d conversion
- adc採用過采樣噪聲整形技術實現高精度模數轉換，和傳統的nyquist率模數轉換器相比，避免了對模擬電路性能指標和元器件匹配精度的較高要求，並可充分利用現代vlsi的高速、高集成度、低成本的優點，已成為音頻模數轉換的主要技術。Computer network and information science, digital video surveillance system is becoming the first choice in modem society, in which real - time and first - hand digital monitoring is provides after video frames are captured by video cameras installed in various locations, and then transformed to digital images, which can be effectively archived on digital media after compression
隨著數字視音頻壓縮技術、計算機網路和信息科學的迅猛發展，數字化的視頻監控系統成為時代的必然產物。數字視頻監控系統就是通過設置在不同位置的攝像頭採集數據，經過變換系統、視頻壓縮系統將數據匯集並處理，在監視器上顯示並管理，為管理人員提供實時及直觀的視覺資料。Since the mpeg - 2 decoding chip is a soc, 32 - bits embedded risc cpu core is used to decode the ac3 and ts bit stream. the risc core is also used to manage the different task in the chip and the video processing unit is realized in asic modules
論文設計的mpeg - 2系統集成解碼晶元是一個soc ，該soc採用32位嵌入式risccpu核virgo進行音頻ac3和ts流解碼的計算任務，並承擔soc的管理；視頻解碼採用asic實現。The designed system includes functions of audio and video broadcast, screen image broadcast, interaction of electronic whiteboard, real - time courseware making, etc. the realization of the system relies on technologies of mpeg - 4, streaming media, network, database, smil and takes visual c + + of microsoft as the development tool
所設計的系統具有視音頻廣播、屏幕圖像廣播、課件製作等功能。系統的實現綜合採用了mpeg - 4技術、流媒體技術、網路技術、數據庫技術和同步多媒體集成語言smil等，採用微軟的visualc + +作為開發工具。The system realization mainly includes the realization of recording, playing, coding - decoding, compressing and rtp of the audio as well as video capturing, replaying, etc. those problems of audio - compressing technology, audio - delaying, audio - jitter, echoing and voice activity detection which influence the audio quality have also been discussed and dealt with
其中系統實現主要包括語音的錄制、播放、編解碼、壓縮、實時傳輸協議等的實現以及視頻採集、回放等。對影響語音質量的語音壓縮技術、語音時延、語音抖動性、回聲以及靜音等問題進行了探討和處理。So, audio collecting and processing card can sample audio frequency range from 50 hz to 6khz with g. 722. 1 audio coding
採用了g . 722 . 1這種高質量、低碼率的寬帶語音編碼，使採集卡能夠完成對50hz到6khz之間連續變化的音頻進行採集。It comprises functions of video - audio data collecting, coding, storage, transmission, decoding, playback and vidicon remote control. the center can monitor many remote surveillance stations at the same time, and each remote surveillance station can monitor more than one singnal in the mean time
該系統具有視音頻的採集、壓縮、網路傳輸、解壓、存儲、回放、攝像機遠程控制等功能，監控中心能同時監控多個現場監控站點，每個現場監控站點又可同時監控多路信號。The audio information is sampled and measured and coded by the dsp card. the process speed is quick. there are a filter circuit, a power check circuit and a range - frequency characteristic check circuit which are designed to check the system status
在硬體上，採用dsp語音處理技術，由高品質的dsp2000音頻卡進行音頻信息的採集、量化和編碼操作，不但提高了音頻的質量，也提高了音頻處理的速度。The gestures are then connected wirelessly to guitar audio samples to generate the music
這些動作會被以無線電通訊的方式傳送到吉他音頻採集器中，並最終合成出人們所聽到的音樂。Based on the system, i discuss the method of developing net programs with delphi and introduce the software codec in windows and the software interface for codec, audio compression manager and video compression manager to perform real - time audio and video processing. audio captures and video captures based on directshow and video display based on directdraw are introduced. we also discuss the method of synchronization for audio and video and the method of developing own component with delphi
重點討論了利用delphi開發網路程序的方法： windows環境下用於壓縮多媒體數據的音頻視頻軟體壓縮解壓縮器（ codec ）及相應的軟體介面音頻壓縮管理器（ acm ）和視頻壓縮管理器（ vcm ） ；音頻採集技術和基於directshow技術的視頻採集技術；基於directdraw技術的視頻顯示技術；多媒體視頻會議系統中實現音頻和視頻同步的方法；利用delphi開發自定義組件的方法，並給出了相應的delphi程序實例。By the study of rtp / rtcp protocol, video encod / decode technic, directshow, timestamp and multicast, the paper brought forward the design project of streaming media real - time system based on rtp. the system has the function of video / audio capturing, encoding, network transmission, decoding, storage and playback. it resolved some problems such as streaming media transmission on narrow banwidth better. these functions were accomplished by software with using mpeg - 4 standard to encode and decode video stream
該系統具有音視頻採集、編碼、網路傳輸、解碼、和回放等功能，較好的解決了目前網路流媒體傳輸存在的網路帶寬較窄等問題。這些功能都採用軟體實現，採用視頻壓縮標準mpeg - 4對視頻進行編碼解碼。在硬體方面只作較少的投資，因此，成本低，易於升級。分享友人