Transferred from: http://www.ibm.com/developerworks/cn/linux/l-audio/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 un
1. Implement with Applet: (simplest method)
Java code AudioClip player = applet.newaudioclip (URL); AudioClip Introduction: The AudioClip interface is a simple abstraction for playing audio clips. Multiple AudioClip items can be played at the same time and the resulting sound is mixed together to produce a synthetic sound. Repeat: Player.loop ();/a sentence is done.
AudioClip player = applet.newaudioclip (URL);
AudioClip Introduction:
The Au
https://www.zybuluo.com/khan-lau/note/383775
about Opus
The Opus codec is a specially designed interactive voice and audio transmission for the Internet. It was designed by the IETF's codec workgroup, merging Skype's silk and xiph. ORG's Celt technology.The Opus codec is designed to handle a wide range of interactive audio applications, including voice over IP, video, in-game chats, and even remote live m
When I visited a software forum recently, see About the Storm audio and video installation parameters of the post, originally in the Storm audio and video release of the 6.0 version, many Storm fans found that it added new features, but also bundled more rogue software, so the Storm fan will be used to avoid bundled rogue software methods. Just the author is due to install storm
SummaryThis article introduces the principle and basic implementation process of VoIP, and analyzes the composition of audio latency in the Ethernet environment. The experimental results show that the audio latency in the Ethernet environment is mainly composed of the buffer latency and API call latency, and the most important part is the API call latency. This paper proposes a method to reduce API call lat
In a big aspect, the android audio system architecture has not changed much compared with Android. The analysis of the audio architecture of 2.2 still applies to 2.3. Many people have already elaborated on this aspect in detail and I will not repeat it here. The storage location of files in each module has changed, so you need to understand this.
1. A major improvement is the introduction of the mixable
Transferred from: http://www.cnblogs.com/javawebsoa/archive/2013/05/20/3089511.htmlThe students who have been in touch with iOS audio development know that core audio is the basis for the digital audio processing of iOS and MAC, which provides a set of software frameworks that the application uses to process audio, and
*/public static final int stream_ring = 2; /* Ringtones and SMS Tips */public static Final intstream_music = 3; /* Music Playback */public static Final intstream_alarm = 4; /* Alarm Bell */public static Final intstream_notification = 5; /* Notify Sound *//* The following are hidden types, not open for upper application */public static Final Intstream_bluetooth_sco = 6; /* Call when connecting to Bluetooth */public static Final intstream_system_enforced = 7; /* Mandatory system sounds, such as t
1. The principle of audio and video synchronization
2. A more positive method for audio and video synchronization
3. Audio and video synchronization problems encountered
Disclaimer: All content Below is reproduced
1. Original from: http://bbs.chinavideo.org/viewthread.php?tid=1183extra=page%3D1%26amp%3Bfilter%3Ddigestpage=1
The following sections are posted:
1. The principle of audio and video synchronization
2. A more positive method for audio and video synchronization
3. Audio and video synchronization problems encountered
Disclaimer: All content Below is reproduced
1. Original from: http://bbs.chinavideo.org/viewthread.php?tid=1183extra=page%3D1%26amp%3Bfilter%3Ddigestpage=1
The following sections are posted:
Android calls the built-in recording audio program
Android has its own Audio recording program. You can specify an Action MediaStore. Audio. Media. RECORD_SOUND_ACTION Intent.
Start it. Then, in the onActivityResult () method, retrieve the Intent Data, which is the URI of the recorded audio.
Java code:
Copy codeThe Co
1. Audio and videoVideo on the WebUntil now, there is still no standard for displaying video on a Web page.Today, most videos are displayed via plugins (such as Flash). However, not all browsers have the same plugin.HTML5 provides a standard way to include video through the visual element.Video FormatCurrently, the video element supports three types of videos:Format IE Firefox Opera Chrome SafariOgg no 3.5+ 10.5+ 5.0+ NoMPEG4 9.0+ No no 5.0+ 3.0+WebM
In iOS development, the most important framework for audio and video is the avfoundation framework. Starting from this article, we will focus on avfoundation-based audio usage and processing. To learn how to use audio, you must first understand the audio session.
1. What is an aud
*************************************************************************************************************** ************Easywave Time: 2014.10.25Category: Linux application-alsa audio architecture Alsa-lib porting to compilation declaration: reprint, please keep the linkNote: If there is an error, please correct me. These are the journal articles I studied ...*****************************************************************************************
Introduction to various management---audio management: Audio management classes for more audio, more categories of items, often the main process to write, so that the programmer can directly find the audio clips want to play, although slightly complex, but easy to organize and later add, if a project in the late reques
ALSA is a late audio processing library in Linux, mainly for improvements to the existing OSS libraries. Better performance, support for multiple playback sources, and so on. But correspondingly, increased programming complexity.The old OSS is a standard file IO interface, the device is opened with open, the audio recording is the data IO interface (read/write), the parameters of the device are controlled b
ALSA is a relatively late audio processing library in Linux, mainly for the original OSS library to improve. Better performance, support for multiple playback sources, etc. but correspondingly, the complexity of programming is increased.The old OSS is the standard file IO interface, the device opens with open, the audio broadcast is using the Data IO Interface (read/write), the parameters of the device are
Audio and video storage using the MPEG4IP library interface
Mp4writesample Write-Audio Video frame (requires precise control of timestamp, time stamp can use relative value, that is, the current frame timestamp minus the timestamp of the previous frame)
Mp4addh264videotrack adding H264 Track (timescale time factor parameter is important, based on the timestamp type definition of the video frame, 90000 (vid
As the current mainstream media playback software, Storm audio and video is almost household name. Version of the constant update so that the storm audio and video has more and more new features, so it is very convenient to grasp some skills to quickly operate. The latest launch of the Storm audio and video V2.9 Beta has a lot of practical new features, and hidde
BasisLet's take a quick look at some basic audio knowledge.At present, we need to rely on audio files for audio playback on the computer, audio file generation process is the sound information sampling, quantization and encode the digital signal generated by the process, the sound that the human ear can hear, the lowes
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