trident audio

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

Introduction to the Android Audio FrameworkBasic audio knowledge What are the important attributes of sound? Loudness) The sound level is the volume of all kinds of sounds that humans can perceive. The sound intensity is directly related to the amplitude of the acoustic wave. Pitch) The tone is related to the frequency of the voice. When the voice frequency increases, the voice that the human ear

For common audio playback, using XAudio2 is sufficient. time is to kill a pig knife, funny is that I became a pigBack in Windows Vista, m$ introduced the new audio architecture UAA, where CoreAudio took over Dsound, wavexxx, and mediafundation, through Core audio APIs, The audio performance of Windows can be comp

In the previous study, video and audio playback were performed separately. This is mainly for the convenience of learning, after a period of study, the FFmpeg also have a certain understanding, this article introducesHow to use multithreading to play audio and video simultaneously (not synchronized), and the previous learning code is refactored to facilitate later extension.This article mainly has the follo

From: http://baike.baidu.com/view/3393911.html? Fromtaglist # sub3393911 It is mentioned in this article that audio tracks of these times can be directly transmitted to the power amplifier through HDMI for decoding and output. Introduction Next-generation HD audio tracks, simply put, are the following five specifications: lpcm (lossless compression), Dolby Digital plus (lossy compression), Dolby truehd (

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

Android Audio Analytics1 Android Audio System framework? Multimedia framework:The multimedia framework is responsible for encapsulating the playback/recording class, connecting the Android audio decoding library for audio software decoding, and connecting the high-pass Openmaxil interface. The upper app directly invoke

Author: Hu Zhenyu Recently, many of my friends have asked me some questions about audio/video encoding and decoding. This is probably because of the popularity of mobile phones, PDAs, and other devices and the increase in bandwidth, the spread of audio and video is becoming more and more popular. However, I found that many of my friends are still unclear about some basic concepts, especially encoding and f

1.2.1 Common formatsCommon audio formats are: CD format, WAVE (*. WAV), AIFF, AU, MP3, MIDI, WMA, RealAudio, VQF, Oggvorbis,AAC, APE. CDThe audio quality of the CD format is relatively high. So to speak the audio format, CD is naturally the leading pioneer. In most playback software, the "hitOpen file Type ", you can see the *.CDA format, which is the CD track. S

I. Digital Audio The audio signal is a continuous analog signal, but the computer can only process and record binary digital signals. The audio signals obtained from natural audio sources must undergo certain transformations, the digital audio signal can be sent to the compu

#include #include#include#include#include#include#include/*The following three parameters are related to a specific file * cmd:file audio file * [file Pass.wav] =>> Pass.wav:RIFF (Little-endian) data, WAVE Audio, Microso FT PCM, + bit, mono 44100 Hz * 1. 16-bit * 2. Mono for the channel =1, stereo for stereo = 2 * 3. 44100HZ frequency This is what we all know, and the number of bits to capture or play

　Windows7 Audio Service not running solution Workaround 1, Windows7 "Audio service is not running", there is a red fork to do? User tips simple approach: Point small speaker, the volume to the maximum Workaround 2, Windows7 Audio service failed to start you can open the Management tool for Control Panel, open the list of services, select the Windows

How does the WIN8 system set up the audio manager? Win8 Set the Audio Manager method: 1, the first speaker audio cable unplug, temporarily not connected, in the Control Panel to open the hardware and voice button, click on the audio manager; 2, plug in the speaker audio

In PowerPoint slides, we often use audio and video files, but what kind of audio and video files can be played in PowerPoint. Today I will discuss this topic with you. Figure 1 In PowerPoint, audio and video files are often played through "Insert → movie and sound → files in movies (or sound in Files)", which makes it inconvenient to control sound a

The versatile audio Converter supports all current popular audio and video formats. such as: MP3, MP2, OGG, APE, WAV, WMA, AVI, RM, RMVB, ASF, MPEG, DAT, 3GP, MP4, FLV, MKV, MOD, MTS, such as audio and video format, converted to the MP3/WAV/AAC/WMA/AMR, etc. More powerful, the software can extract audio files from the

The browser plays the audio file directly, 1 is the direct access to an HTML audio file, and 2 is the return of a Java audio stream to the browser parsing.The following implementation of a Java WAV file audio stream, you can play audio files directly1 Packageorg.lib.speech.