By default, the sampling rate of Android sound is fixed to 44.1 kHz, and the recording sampling rate is fixed to 8 kHz, therefore, the underlying audio device drivers only need to set these two fixed sampling rates. If the sampling rate transmitted from the upper layer does not match the sampling rate, the android framework layer performs resample processing on the audio stream.
The resample process is as f
Android calls your own recorded audio program
Android has its own audio recording program, we can specify an action MediaStore.Audio.Media.RECORD_SOUND_ACTION intent to
Just start it up. Then, in the Onactivityresult () method, get the intent data, which is the corresponding URI of the recorded audio.
Java code:
Copy Code code as follows:
Package Eo
C Language resolution WAV audio file code address: Github:github.com/casterwx/c-wave-master Directory
Objective
Understanding WAV Audio Files
What is a binary file
Binary format parsing of WAV
C language parsing WAV audio files
Two details
Summarize
In the computer has a variety of files, such as EXE executable file, jpg This image fil
Bowen from Http://blog.csdn.net/droidphone Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1. Origin of Asoc
Asoc--alsa system on Chip is built on a standard ALSA drive layer to better support a software system for embedded processors and audio codec in mobile devices. Before ASOC, the kernel had some support for
HTML5 audio API research and learning 1
HTML5 audio
1. audio sprite
The main idea of the audio genie is similar to that of the css genie. It combines an audio into an audio and uses currentTime to obtain the current playback time
The WebAudio API is designed to add sound effects to audio files, but it can also be used to play audio files. This is similar to the HTML5 audio element function, but the audio element can have a control interface, you can click the play/stop button on the interface to control file playback, or drag the progress bar o
First, digital audioAudio signal is a continuous change of the analog signal, but the computer can only process and record binary digital signal, from the natural sound source audio signal must undergo a certain transformation, become a digital audio signal, can be sent to the computer for further processing.The digital audio system realizes the reproduction of t
Tags: LSA generated audio span describe ATI channel Ann correctAudio ClockingAudio clock==============This text describes the audio clocking terms in ASOC and digital audio inGeneral. Note:audio clocking can be complex!This article describes the audio clock terms in ASOC and digital
Http://www.cnblogs.com/haibindev/archive/2011/12/29/2305712.htmlRTMP (Real time Messaging Protocol) is a streaming protocol specifically designed to transfer audio and video data, originally created by Macromedia and later owned by Adobe, a proprietary protocol used primarily to contact Flash Player and Rtmpserver, such as FMS, Red5, crtmpserver , etc. The RTMP protocol can be used for live streaming, on-demand applications, and FMLE (Flash Media live
Skills | optimization
Like Macromedia Flash has changed the way we experience the Web, Macromedia Flash Lite has the same effect on mobile devices. Sound effects are part of this rich experience. In fact, sound is an integral part of any mobile device, providing warnings, ringtones, audio prompts, and background music for a variety of entertainment uses. In this article, I'll introduce you to the Killersound tip-an innovative way to use sound in Flash
Audio this aspect is very profound, I certainly can not speak what advanced things, at most also just some basic knowledge, first, we want to introduce Android he provided the recording class, in fact, he has two, one is Mediarecorder, There is another one that we are going to use today, what is the difference between them? Audiorecord
I. Distinction
Mediarecorder and Audiorecord can record audio, the dif
Before I developed my iphone, I knew very little about the sound format. I know some of the differences between "wav" and "MP3" sound formats, but I certainly can't tell you exactly what the "AAC", "CAF" sound file is, and how the best way to convert audio files on your Mac is not known.I know that if you want to be a qualified iphone developer, you have to have a basic understanding of sound file data format, conversion, recording, and what
Dolby truehd is the next-generation lossless compression technology designed for HD disc media. This technology provides excellent audio and HD recording studios with the highest definition, allowing the next generation of CDs to bring you a real HD entertainment experience. With high-definition images, Dolby truehd technology provides an unprecedented home theater experience, allowing you to enjoy the same amazing sound as high-definition images.
F
In the Android multimedia class, Mediamuxer and Mediacodec are relatively young, they are JB 4.1 and JB 4.3 only introduced. The former is used to mix audio and video to generate multimedia files. The disadvantage is that only one audio track and one video track can be supported at this time, and only MP4 output is supported. But since it is a new thing, I believe that after the version should be a big impr
executed by the functions in the MDD layer, the integrated driver can be simpler and more effective.
The source code of any sample driver can be used as the basis for implementation, whether to implement a hierarchical driver or an integral driver.
For more information, see
Windows CE Drivers|Driver Development Tools|Driver Debugging|How to Use the CETK to Test a Driver|Drivers: Post-Development Tasks
As an alternative to directly using the unified au
These months have been doing the iphone audio and video things, because the individual is lazy, so has not tidied up, now idle egg pain, and later the project to be shelved, here to record what I do the iphone mobile push the stream of things.Projects are personal research and experimentation, there may be many bad or wrong places please forgive.1 Overview of features* Realization of audio and video data co
When developing a call center, you need to play the voice. You need to convert the wav format of your recorded voice to the gsm format. asterisk also supports the wav format, however, it is unclear why the wav file cannot be played if it is larger, so it is only converted to the gsm format.Command: sox 00.wav-r 8000-c 1 00.gsm resample-qlThe following is an article source found on the Internet.Sox is the most famous Open Source audio file format conve
iOS audio AAC video H264 coded push flow best practicesProjects are personal research and experimentation, there may be many bad or wrong places please forgive.1 Overview of features* Realization of audio and video data collection* Realize the encoding of audio and video data, video encoding into H264, audio encoding i
This article complements the two examples in the simplest ffmpeg+sdl-based audio player: The FFmpeg audio decoder and the SDL audio sampling data player. These two sections are the two examples that are split out from the audio player. The FFmpeg audio decoder enables the de
The simplest Audio Player Based on FFMPEG + SDL: Split-decoder and player, ffmpegsdl
Two examples of the simplest FFMPEG + SDL-based audio player are described in this document: FFmpeg audio decoder and SDL audio sampling data player. These two parts are two examples split from the
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