1. Avaudiosession OverviewThe last year has been doing iOS client development for IPC camera. To deal with audio, you have to figure outAvaudiosession.First look at the Apple's official map:Audio SessionYou can see that avaudiosession is used to manage the resource usage of multiple apps on audio hardware devices (microphones, speakers).For example, avaudiosession can do these things.
Set whether y
ways to get audio footage directly using PowerPoint 2013
1. Start PowerPoint 2013 and open the presentation and select the slides you want to insert the sound into. On the Insert tab of the Ribbon, in the Media group, click the Down Triangle button on the audio button to select the Online audio option in the Open Drop-down list, as shown in Figure 1.
There are many articles that describe the poor status of HTML5 audio support. That is the case, so I will not repeat this view here. Instead, I focus on the issues and potential solutions that developers will encounter on a particular platform.HTML5 Audio from Codecanyon.neTableThe above table summarizes the current market share of Web browsers. Internet Explorer is still the main desktop browser, followed
The software operation example of recording in Lesson four
Recording on the system configuration and operating system basic requirements: support Win98 above all operating systems, DX8.1, recommended dx9.0b, memory of course, the larger the better, 128MB memory recommended use WIN98,256MB memory above recommended use WINXP,CPU of course, the sooner the better, Hang DX plug-ins More words system resources consumption less, general now mainstream or slightly outdated computers are no problem, the
WAV: Losslessis a sound file format developed by Microsoft that conforms to the Piffresource Interchange File format specification for storing audio information resources for the Windows platform and is supported by the Windows platform and its applications. “*. WAV "format support MSADPCM, Ccittalaw and other compression algorithms, support a variety of audio digits, sampling frequency and channel, the sta
Playback of sound effects
First, a brief introduction
In simple terms, audio can be divided into 2 kinds
(1) Sound effects
Also known as "short audio", usually plays in the program 1-2 seconds long
Play a decorative effect in your application to enhance the overall user experience
(2) Music
such as "background music" in the game, the general playback time is longer
Frame: Playing
Here is the introduction of the basic knowledge of music in Flash, if you want to know how to deal with the music in Flash, please read this article.
Flash provides several methods for using sound. You can make the sound play independently of the timeline, and you can synchronize the animation with the track. Attaching a sound to a button makes the button more responsive. Makes the sound fade in and out, making the track more graceful.
There are two types of sounds in Flash, event sounds (events
In previous versions of HTML5, if you wanted to insert audio and video into a webpage, you would have to install a plugin, such as the most common flash plugin. A lot of people in the first installation of a browser will encounter the browser is recommended to install Flash plugin, on the mobile side as well. If you want to watch video on the phone must install Flash plug-in, but the phone itself memory is very small this undoubtedly increased the mob
Linux Audio Programming GuideAlthough the advantages of Linux are mainly embodied in the network services, but in fact, there is also a very rich media function, this article is based on multimedia applications of the most basic sound as an object, how to develop the actual audio applications under the Linux platform, and also some common audio programming framew
1, turn off the Realtek HD sound card driver for the front of the audio Panel automatic detection function;
2, set the default recording equipment for front Pink in (front pink Jack, may also be the name is front Mic).
If you are unable to understand the above Setup profile, please see the details below.
Step One: check the BIOS settings in the motherboard, keyword: Front Panel Type.
Some motherboard manufacturers in the BIOS of the default forw
HTML5 's audio tag provides us with the ability to control sound, but using native HTML5 to develop sound or music-related items is still a hassle, and in this article we'll cover 5 JavaScript audio libraries that help you simplify your development. believe that reasonable use can help you to efficiently develop applications and projects based on HTML5 audio, I h
Although the browser development is very fast, but the standard in the browser is still imperfect, in the previous development of HTML4+CSS2+JS to let many programmers headaches is browser compatibility problem, audio playback is the same, until now, there is still no web page to play video and audio standards. Now, in most browsers, audio is played through Plug-
version 2.53 and version 2.54 directly have sound,For a later version, the transferred mpg files do not have sound. In this case, you need to extract audio from rm and rmvb using streamboxripper and save it as wav Files, as the audio input source of tmpgenc plus, this naturally causes a lot of trouble,Therefore, we recommend that you only use tmpgenc plu 2.53/2.54(I personally use tmpgenc plu version 2.54.
Part of this article refers to the blog from Droidphone (http://blog.csdn.net/droidphone/article/details/6271122), about Alsa writing a very good article, just a few examples. This article is a combination of examples to analyze the ALSA audio driver.Development environment: ubuntu10.04Target board: linux-2.6.37 (view Linux kernel information via command uname-r)Compiler: arm-none-linux-gnueabi-(None on behalf of compiler creator, such as: FSL for Fre
Http://blog.csdn.net/dinggo/archive/2007/12/29/2002298.aspx
AMR Audio Codec
Table of Contents 1. Overview 2. AMR Code 3. AMR decoding 4. AMR frame reading algorithm 5. Resources
1. Overview
Many smartphones now support multimedia features, especially audio and video playback, and the AMR file format is a widely supported audio file format for mobile phones. A
As the most well-known media player software in China, Storm audio and video has been in the market in 08 and is dedicated to creating a complete video playback platform for 150 million users. In this platform, not only the continuation of the Storm audio and video to the user's local storage environment of all kinds of audio and visual files of the universal pla
First, an overview of the WEBRTC audio processing flow, see:WEBRTC The audio session is abstracted into a channel channels, such as A and b for audio calls, a needs to establish a channel and b for audio data transmission. There are three channel, each channel contains codec and rtp/rtcp send function.In the case of a
Author: Yang xingping
The resources on the Internet are really rich and colorful, such as MP3, movie and TV series, and funny cartoons and Flash. However, in the face of the vast Internet, A lot of netizens often look at the Internet and sigh, because some resources are difficult to save to a local computer to listen to or watch them again using the conventional method.
Today, we will introduce the "audio and video probe". This software not only finds
Small series of computer just reload Win7 system, found no sound, using Windows7 users will find in the lower right corner of the taskbar in the position of the volume icon shows a small red fork, put the mouse up later to show that the audio service is not running or not plugged into the speakers or headphones. There are two situations in which the "Audio service is not running" but the computer has sound,
1, click the "Insert" tab, click "Video"-"video on PC" To insert a video, the effect of inserting the following image as shown below.
2. After inserting the effect as shown in the following figure, the next step begins to trim the video.
3. Select the video, which will display the video tool (including the format and Playback tabs), click the Play tab, and then click Clip Video.
4, the "Clip Video" dialog box, you can drag the following figure in the circle
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