audio digitization

(reprint) Common Audio Protocol IntroductionIntroduction and comparison of common audio protocols for conference TV white PaperFirst, the digital audio principle: The sound is actually a kind of energy wave, therefore also has the frequency and the amplitude characteristic, the frequency corresponds to the time axis, the amplitude corresponds to the level axis. U

Recently my wife gave me a death order, let me the computer's "broken speakers" to replace, she really can not endure to listen to music without surround sound, watching movies without overweight bass, play no game stereo sound, singing KTV simply do not sound ... Vulgar speech: "Head can be broken, blood flow, wife orders can not be lost." "Yes, this time must be excellent to complete the task of wife confessed!" Can change the speaker to spend money, if not change the speaker can also bring th

FrequencyDifferent frequency sine wave, the lower part than the upper part frequency high frequency is the unit time the repetition occurrence number measure, in the physics usually by the symbol Roman letter F or the Greek word ν, its international unit is Hertz (Hz). When an event is repeated n times in a T time, this event occurs at a frequency of f = n/t Hz. And because the cycle is defined as the minimum interval of recurrence, the frequency can also be expressed as the reciprocal of the cy

This article mainly introduces the composition of AudioUnit This article is made up of your own understanding. If you have any errors, please contact our netizens for correction. Understand the architecture of Audio Unit Before we started, we realized audioUnit through an AudioUnit object, which is an Effect type AudioUnit of this type. This unit consists of many small scopes, scope has element, elementt has channel, stream format, and properties. Do

in the process of deepening understanding, as well as during the discussion with you after the article, worried that the successor according to this one year ago detours, Bill felt the need to make an update on the article, point out the detour to avoid misleading later. 1. The beginning of their own is the AECM, NS, VAD, AGC each module extracted separately use, now seems to be troublesome, and the effect is not very ideal. If everyone's project has no special requirements, large can be the en

A very hard Aoshu problemTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission (s): 537 Accepted Submission (s): 368   Problem DescriptionAoshu is very popular among primary school students. it is

First, click "OK" to turn it off, and then go to the Adobe audition main interface. Second, then point to the Adobe Audition interface Menu "Edit", in the pop-up menu, select "Audio Hardware Device", as shown in the following figure. Third, in the Audio Hardware Settings Pop-up dialog box, click Control Panel, as shown in the figure. Four, here you need to check the DirectSound input port o

AutoPlay: Play immediately after audio is readyCONTROLS: This property appears, displaying the playback controls to the user.Loop: Whether to re-play at the end of the audioPreload: If this property appears, it is loaded when the page loads.src: The URL of the audio to play.Methods are:Load (): New load resource.Play (): Start playback.Pause (): pauses playback.These are the basic points of knowledge. If we

QQ audio and video to do continuous shooting? 1. The video that will burst is opened in the QQ audio-visual, if did not download a 3. For file name, save type, thumbnail layout (row, column adjustment), picture width do edit, save can How to use QQ audio and video to do gif map? 1. The video to be intercepted is opened in the QQ AV player, if the p

MP3 is only a type of audio format. However, audio has several important parameters, such as kHz, bit, audio channel, and kbps. the formats are different, and the algorithms are different. Therefore, when the above parameters are the same, the quality of different formats varies greatly. VBR is a kind of dynamic sampling. For more information, see the following d

Turn from: http://blog.csdn.net/lixiaowei16/article/details/53407010 Audio and video synchronization is related to the most intuitive user experience of multimedia products, audio and video media data transmission and rendering playback of the most basic quality assurance. If the audio and video is not synchronized, it may cause delays, such as cotton, etc. ver

(Http://vod.sjtu.edu.cn/help/Article_Show.asp? ArticleID = 1065 articlepage = 1............Http://vod.sjtu.edu.cn/help/Article_Show.asp? ArticleID = 1065 articlepage = 8) [Author: cl1003 resending from winzheng.com] Goldwave is a set of audio editing, playing, recording, and conversion tools. It is small in size and has no weak functions. There are quite a few open audio files, including WAV, Ogg, VOC, IF

article shows that in the case does not support HTML5, will be flash play, but in support of HTML5 Firefox play MP4, but encountered great difficulty, although the call to Flash, but has been unable to play (but I have always suspected that my Firefox flash has a problem , don't know if it's true). But if you follow Videojs's advice and put in two-format videos, you won't have this problem.In addition to the writing of video also has a special for flash writing, of course, you can also use this

multiply the input analog audio signals. The result of multiplication is the digitization of the input signal on the timeline. Then, the signal amplitude after sampling is quantified. The simplest quantization method is balanced quantization, which is completed by the quantizer. Encode the signal after A/D transformation of the quantizer, that is, convert the quantified signal level into A binary code grou

1, on the "My Computer" right, select the "Properties" item, open the System Properties window, switch to the "Hardware" tab, click the "Device Manager" button, open the Device Manager window. 2, open the optical Drive child node, right click on the optical drive device Select the "Properties" item, open the Optical Drive Properties window, click on the "Properties" tab, the option "for this CD-ROM device to enable digital CD audio" before the

This article focuses on how to capture a single frame of audio data on the Android platform. Before reading this article, it is recommended to read my previous article, "Android Audio Development (1): Fundamentals", because in the audio development process, often involves these basic knowledge, after mastering these important concepts, the development process of

1. Preface backgroundBefore the advent of HTML5, Web page access to audio and video mainly through the Flash,activex plug-ins, as well as Microsoft later launched Silverlight to show, although Flash once swept the world, but with the continuous development of the Internet, into the mobile era, Flash Thunder gradually replaced by HTML5, the main reason is that flash often burst loopholes, security concerns, poor performance, the network browsing and eq

IOS 9 Audio app play audio playback control pause stop forward back settings iOS9 audio app playback controlyou can see that the Avaudioplayer class has a number of properties and methods in the "IOS 9 audio app plays audio iOS9 audio