Digital audio systems reproduce the original sound by converting the acoustic waveform into a series of binary data. The device used in this step is A/D) it Samples sound waves at tens of thousands of times per second. Each sampling record the state of the original analog sound waves at a certain time point, which is called a sample. Connect a series of samples to describe a piece of acoustic waves. The number of samples per second is called the sampl
Due to historical reasons, there are multiple API systems available for sound programming in Linux. However, without proper guidance, it is difficult to find a system that suits your needs. Here is a guide written by Lennart Poettering
The simplest guide is to ask yourself: "What do I want (using the Linux Sound API) to do? ". The answer is as follows:I want to write a media player-like software!
Then use GStreamer. Unless you only want to program based on KDE, you can choose to use Phonon.
I
A blink of an eye has been three months did not write a blog, graduation season is indeed many things, and now finally complete graduation, blog or can not fall. Occasionally, you have to write.Play HTML5 Audio API is because the blog in the park before the blog about this, think it is very fun, so I learned a bit. This article is for your own learning record only. Please indicate if there is any mistake.The final effect is like the right figure, th
The audioplayer.js is a responsive, touch-enabled HTML5 music player. This article is the official website of the description of the document to be translated, bloggers for the first time translation of foreign languages. Please understand the place where you are not. JS file Address: Http://osvaldas.info/examples/audio-player-responsive-and-touch-friendly/audioplayer.jsYou can right-click on the address above and choose Save As to save the JS file to
Sometimes there is no sound in our computer, and when you click Start, the audio and Audio device Properties window is turned on from the control Panel, which is not available, and the "No Audio device" error message appears on the screen.
The computer appears "no audio device" prompts, is generally due to
Today see very good introduction audio development articles, reproducedOriginal address: http://msching.github.io/blog/2014/07/07/audio-in-ios/PrefaceMusic-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 blog
HTML5 's audio provides audio playback, but the native player style is not very good-looking, and the browser's appearance of the audio is not uniform. We can implement a responsive, touch-smart player with a slightly packaged audio.
Html
In fact, if only the above code, in support of HTML5 browser on the normal di
The child learns English, the pronunciation is the difficulty, often before learns behind forgets. If they can make audio books and courseware for them, they can greatly reduce the difficulty of their learning and save the parents ' tutoring time. WPS launched a practical office gadgets-"audio", Chinese and English words, phrases, sentences, articles can be read aloud or generate voice files, I believe it c
information such as user names and passwords, or inject malicious software into it.
This SSL security vulnerability was first introduced into the iOS system in 2012, but only for Mac computers with OS X 10.9 systems installed. Users who use the OS X "Lion" and "Mountain Lion" systems are not affected.
In fact, the OS X 10.9.2 system has already launched a beta version last December, and then released 7 Beta updates, the launch of this formal version of the Emergency repair of the SSL vulnerab
The previous article (latency) and the reduction method at the end of the speech communication, said that from the beginning of this article will cut into the WebRTC Neteq theme, Neteq is one of the two core technologies of audio technology in WEBRTC (another core technology is the front and back processing of audio, including AEC, ANS, AGC etc, commonly known as 3 a algorithm). WEBRTC is an open source of
Using Html5media.js to view HTML5 video and audio files on all browsers, it makes up for the low version IE browser does not support How to use it?To make HTML5 's video and audio tags work on all browsers, you must include the following line of code inside the head of the page:
You can then add a video using the following code:You can also add a section of audio
The operation of the audio device is primarily to initialize the audio device and send PCM (Pulse Code modulation) data to the audio device. For convenience, this article uses the libraries and drivers provided by ALSA (Advanced Linux Sound architecture). When compiling and running the MP3 streaming Media player in this article, you must first install the ALSA-re
There is a big difference between Waveoutgetnumdevs and Mixergetnumdevs. Or an example to see the phenomenon of my machine has three sound cards, respectively: 0--serial audio Device 1--usb audio Play 2--vinyl AC ' EG1: #define My_aud Io_name "Serial Audio Device" int Getwaveoutid () {
int ndevnum = Mixergetnumdevs (); The difference is right here. Ndevnum is 2
C
Web Audio API hands-on teaches you how to use web APIs to process sound signals: visual music demo,1. Introduction to Web Audio APIs
The Web Audio API provides a very effective and universal system for controlling Audio on the Web, in general, we can use various methods provided by the Web
Article Title: three steps to handle audio conversion in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
If you need to convert the Audio format in Linux, Audio-convert-mod is a useful tool.
The Audio Subsystem in the Symbian OS phone mainly contains two types of independent audio data streams. One is telephone sound data, and the other is multimedia data.These two crucial use cases require sound quality and the ability to talk for a long time. A Digital Audio bus dedicated to audio data is used to meet th
I have previously reproduced an article-an overview of the smartphone audio system, which describes the design of the mobile phone audio system. In fact, it is a simple practice, and there are great limitations in the application. So what should a sound audio framework look like? In the past two days, based on some clues of the android4.0 source code, we found th
From: http://blog.chinaunix.net/uid-22917448-id-1765508.html
ASoC Machine Driver
ASoC machine driver==============================
The ASoC machine (or board) driver is the code that glues together the platformAnd codec drivers.ASoC machines or board-level drivers are code that binds the platform and decoder drivers together.
The machine driver can contain codec and platform specific code. It registersThe audio subsystem with the kernel as a platform
From: http://blog.chinaunix.net/uid-22917448-id-1765503.html
Audio ClockingAudio clock====================
This text describes the audio clocking terms in ASoC and digital audio inGeneral. Note: Audio clocking can be complex!This document describes the ASoC and audio clock
An audio effect is a object that takes incoming audio data, and performs some operation on the data before passing it on. Effect to perform a variety of the tasks, including adding reverb to an audio stream and monitoring peak volum E levels.An audio effect is an object that takes input
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