Noise suppression, is what everyone said noise reduction. This noise reduction is a distinction between vocals and non-human voices, which is a noise.A piece of audio that contains vocals and noise is processed by the module, and in theory, only the vocal is left.WEBRTC NS In the industry is still famous, through the actual comparison test, we found that webrtc noise reduction is indeed performance and stabilityare higher than similar open source algo
Recently work used to WEBRTC, found that WEBRTC is a treasure trove, there are many things worth studying.Search this area a lot of information, found that the introduction of the use of WEBRTC, but for some of the algorithm researchNot much. In particular, the algorithm can be said to be concise and clear is even rarer.In fact, I would like to carefully study ea
First, WEBRTC related APIReference: Https://github.com/ChenYilong/WebRTC/blob/master/WebRTC Getting Started tutorial/webrtc Getting Started tutorial. MD1.1 Functional Divisions
Get audio and video data
Transmitting audio and video data
Transfer arbitrary binary data
1.2 API partition: Three JS int
Since the beginning of WEBRTC development, often asked by others, Safari browser can support WEBRTC? I also want Safari to support WEBRTC so you don't have to write native WebRTC apps or Safari plugins.Happily, Apple recently announced that WEBRTC will enter Safari and iO
Reproduced in the original: http://blog.csdn.net/shichaog/article/details/52399354 thank you very much.
Vad (voice Activity Detection) algorithm is to detect the voice , in the far-field speech interaction scenario, VAD faces two challenges: 1. How to successfully detect the lowest energy voice (sensitivity).2. How to successfully detect in the multi-noise environment (detection rate and false detection rate).The missed response is originally the voice but not detected, and the virtual detection
http://blog.csdn.net/nonmarking/article/details/47910043
This series is currently a total of three articles, follow up will also update
WebRTC Videoengine Ultra-Detailed tutorial (i)--the basic process of video Call
WebRTC Videoengine Ultra-Detailed tutorial (ii)--integrated OPENH264 codec
WebRTC Videoengine Ultra-Detailed tutorial (iii)-- Overview of Integrate
1. The following codegit clone https://github.com/ging/licode.gitcd Licode2. Installation dependencies2.1 Configuring the Ubuntu Development environment:2.1.1 Installing the C + + development environment 1 . sudo apt-get Install build-essential // Install the main compilation tool GCC, g++, make Span style= "COLOR: #800080" >2 . sudo apt-get install autoconf
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 concepts in WE
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
This article original from Http://blog.csdn.net/voipmaker reprint annotated source.Based on WEBRTC technology, you can achieve point-to-point audio and video, instant messaging, video conferencing, and the latest system components include:Teleice NAT Traversal server:Standard-based NAT traversal protocol ICE for NAT traversal, audio-video-to-peer transmissionSingle machine supports tens of thousands of concurrentTELEMCU Video Conferencing Server:Imple
Very interesting website http://io13webrtc.appspot.com/#1HTML5 about using WEBRTC http://www.html5rocks.com/en/tutorials/getusermedia/intro/HTML5 example of setting resolution https://simpl.info/getusermedia/constraints/HTML5 examples of various special effects http://webcamtoy.com/zh/app/Examples of HTML5 recordings http://www.webaudiodemos.appspot.com/AudioRecorder/index.htmlGoogle's latest HTML5-based code HTTPS://GITHUB.COM/GOOGLECHROME/WEBRTCSIPM
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 synchronized, it is possible to cause delay, lag, etc. that affect the user experience very much
In WebRTC's example project, there is an Android project called Apprtcdemo, which enables video calling (VoIP) on a wide area network. This article is intended to demonstrate the compilation of Apprtcdemo, with Windows as an example, but also for Mac and Linux. Switch to a Linux environment please specify what platform you are currently using, and if it is Linux, you can ignore this step; otherwise, you will need a virtual machine. I'm using damn windows, and I recommend vagrant, a lightweight v
The text of this text connection is: http://blog.csdn.net/freewebsys/article/details/47174209 not allowed to reprint without the Bo master.1, Encounter problemsFirst of all, WEBRTC is a very good open source project, it is a company that specializes in this, was acquired by Google and then open source projects.You can quickly build a video chat project, and you can compile it yourself.Https://github.com/pristineio/
Previous notes, finishingWEBRTC in the default open RTX for packet loss retransmission, the introduction of RTX can refer to Rfc4588,https://tools.ietf.org/html/rfc4588#section-4RTX uses an additional SSRC transmission, SSRC is identified in the SDP.↵a=rtpmap: rtx/90000↵a2736695910239189782Like this.A RTX packet, in Turnserver, is such that the raw UDP data->turn/stun protocol header->RTP Header1->RTP header2In RTP header1, according to payload type to distinguish RTP, RTX data, if it is rtx, yo
Author: Gustavo Garcia (original link)
Translation: Liu Tong
Bandwidth estimation is probably the most important part of the WEBRTC video engine. The task of the Bandwidth estimation (BWE) module is to determine how much video stream you can send and not network congestion to ensure that video quality is not reduced.
In the previous bandwidth estimation algorithm is very basic, in general, based on the design of packet loss. Usually we start to slowl
Some personal understanding about WEBRTC
Just participated in the sound network presided over the first WEBRTC conference in Beijing, coupled with reading "hundred asked Freeswtich" written by Daniel, to it has more understanding, record for later review:
1, simple understanding, WEBRTC is a way to achieve web-to-business dial audio and video telephony technolog
original articles, Forbidden reprint. otherwise pursued.
The information parsing of RTP header in WebRTC has been explained before.
Here to explain the WEBRTC in the RTP parsing, here is the main explanation of h264 analysis;
About class implementations and related test files that are relevant in VP8 and VP9,WEBRTC;
Regarding the RTP file parsing of H264, t
reproduced in the original: Http://www.cnblogs.com/mod109/p/5767867.html#top thank you very much.
The WEBRTC's audio processing module is divided into noise reduction ns (NSX), echo cancellation AEC (Echo control Acem), Audio gain AGC, and Mute detection section . In addition WEBRTC has encapsulated a set of audio processing module APM, if it is not a special need, if users want to use the echo cancellation and other more complex modules, it is best
Several questions1, WEBRTC transmit bandwidth is estimated for each stream or the total bandwidth2, WebRTC Remb is the overall bandwidth of statistics.3, if WEBRTC at the same time to watch the multi-channel flow, how to for each stream feedback bandwidth, packet loss and other information5, if the WEBRTC simultaneousl
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