ccna audio

MediaPlayer wake-up lockGenerally, MediaPlayer is used to play audio streams. We recommend that you use a Service to carry MediaPlayer instead of directly using it in the Activity. However, in the Android system's power consumption design, to save battery consumption, if the device is in sleep state, the system will try to reduce or disable some features that are not required by the device, including the CPU and Wifi hardware. Then, if it is an applic

Today see very good introduction audio development articles, reproduced Original address: http://msching.github.io/blog/2014/07/07/audio-in-ios/ Preface Music-related app development has been for some time, in the process of the app's player several changes I also therefore for iOS audio playback implementation has been a certain research. Write this series of bl

Basic knowledge about Android audio Development Let's start with a piece of gossip. Some time ago I had a sentiment: Android development is not a way to go. It is just a platform that provides many encapsulated APIs, this allows you to quickly develop applications for specific services. The real value lies in the integration of Android with specific business directions, such as Android and audio and video

There is a good audio FAQ. If you have time, go up and check it out. Link: http://forum.doom9.org/showthread.php? T = 68300 The following part is reproduced: General Audio procedures FAQCross-format techniques for encoding, decoding, and playback. 1. What is the difference between lossy, lossless, and uncompressed audio formats? Uncompressed

I do not know the USB audio device class before developing the driver for the USB audio device. I thought it was a hid driver and it should be easy to develop, later, I found myself in an unknown field. Thanks to the previous development of the mass storage firmware program and the knowledge of the ov511 USB camera driver, the development was completed even though it took more time and twists and turns in t

Guo XiaoxingWeibo: Guo Xiaoxing's Sina WeiboEmail:[email protected]Blog: http://blog.csdn.net/allenwellsGithub:https://github.com/allenwells Android has maintained an isolated audio stream for playing music, alarms, notification bells, incoming calls, system sounds, call sounds, and DTMF channels, which is the premise that we can control different audio, most of which are system-limited and cannot

From: http://book.51cto.com/art/201001/179672.htm Chapter 2Android audio system This chapter introduces the content of the android audio system, which is mainly the audio input/output link and does not involve codec content (the audio system has content from the driver, local framework to Java framework ). This chapt

Audio Processing in WINDOWS　　 In WINDOWS, audio processing can be roughly divided into two parts: audio input and output, and ACM compression.In WINDOWS, Apis such as sndPlaySound (MCI) can be called to play a WAV file, but this is obviously not what we need to do. You must be able to directly Process audio data stream

In the production of the publishing side, you need to collect the sound card output signal, in order to mix with the microphone input signal, for audio processing technology, mainly the following: Capture Microphone Input Collect sound card output Send audio data to the sound card for playback Mixing multi-channel audio inputs Here are t

016-11-25 DORAWEBRTC series Wind net WEBRTC series Wind Net Source: Wind NET Series Author: Weizhenwei, fan network columnist Audio and video synchronization is the most intuitive user experience for multimedia products, and is the most basic quality guarantee for audio and video media data transmission and rendering playback. If the audio and video is not synchr

Audio terminologyIn this DOCUMENT Generic Terms Digital Audio Hardware and Accessories Audio Signal Path Android-specific Terms Sample Rate Conversion This document provides a glossary of audio-related terminology, including a list of widely used, generic terms and a list

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

In the FFmpeg ultra-detailed comprehensive tutorial---------------a sample of reading PC camera video data and sending it as a live stream with rtmp protocol is done in the camera live text, but the audio support is not implemented, so the example is further perfected in this article and the video synchronization problem of live stream is analyzed in detail. , a code example is also given. For the live stream, here only the synchronization of the send

Reprint Please specify source: http://www.cnblogs.com/fangkm/p/4374668.htmlThe previous blog introduces the local video collection, this article introduces the audio capture process, but also introduces WEBRTC native audio collection, and then introduces chromium source to its customization.1. WebRTC native Audio captureLet's first introduce the interface concept

Android 4.1, abbreviated as JB. In Chinese eyes, the word JB is also related to animals. Google modified android so frequently, and finally launched a version that can be put on the mouth of JB all day long. In the future, my articles can also use JB to express the version number, while JB to express what Chairman Mao often said, "Strategic contempt". Please try to understand my mood for writing the word JB according to the context. Today, we will give a brief introduction to the earth-shaking c

Today, as mobile QQ or MSN enters the mobile phone, mobile users begin to enter the new era of video chat or video conferencing, but due to mobile environments (such as elevators, roads, squares, restaurants, bars, trains, and automobiles) mobile phone users are increasingly eager for HD Audio due to various noisy noises or interference. This is why HD Audio has already ranked first in the mobile phone mark

Transferred from: http://www.cnblogs.com/fangkm/p/4374668.htmlThe previous blog introduces the local video collection, this article introduces the audio capture process, but also introduces WEBRTC native audio collection, and then introduces chromium source to its customization.1. WEBRTC native Audio captureLet's first introduce the interface concepts in WEBRTC t

Web Audio is also a relatively new JavaScript API, which is different from the General Web applications should not fall into these APIs, but some types of web sites such as game engines or online music editors should be used.The Web audio API is tightly wrapped around a conceptual design: audio context, which is like a graph, each node in the way is an

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

First of all you should know what is ape? What can ape file play with? A: Ape is a lossless compression format for audio CDs. A: It is recommended to install Plug-ins with Foobar2000,winamp (the latest version is not available) can also play, WMP install Plug-ins can also play. 　 Okay, now do the prep, you need to be prepared with the following software: 1. EAC 095 2. Monkey Audio 397 (that is, the monke