Source code of voice live broadcast app

It's easier for people to pay attention to chat content by video, voice and social networking , It is more helpful to increase the emotion between customers , But in the case of interaction , Video and voice quality is very important . Live in voice app Developing source code , There are many factors that affect the quality of video and voice , Speech coding is one of them , In speech coding , What are the technical indicators that affect customers' video and voice experience ？

One 、 Sampling rate

Live in voice app Source code , Analog signals must be converted into digital signals by sampling , Usually, the higher the sampling rate is , The less information will be damaged after conversion , The clearer this signal will be . Therefore, improving the sampling rate within the range of human ear perception is an important method to ensure the video and voice experience of customers .

Two 、 Bit rate

Live in voice app In the source code of , The bit rate depends on the degree of detail restoration of the audio signal after encoding and decoding . Usually , When the coding rate is relatively limited , Codec will give priority to coding parameters that have a great impact on video and speech quality , And directly abandon the coding parameters that have little impact on video and speech quality . This is the reason why the audio signal is damaged after being decoded .

In order to reduce the source code of audio signal loss in the decoding of voice live broadcast application , High coding rate is required , And not too high , Too high bit rate not only has little effect on improving video and voice quality , And it may lead to network congestion 、 Occupy a lot of bandwidth, affect user experience, packet loss and other issues .

3、 ... and 、 Coding complexity

Although improve voice live app The coding complexity in the source code helps to improve the coding efficiency , But there is also something between them 1 A balance point , Designing a high-quality codec algorithm with limited complexity can effectively improve the availability of codec .

Four 、 Anti packet loss capability

Because voice broadcast applications exist in an unstable Internet environment , Therefore, packet loss may occur in the transmission of audio data , In order to optimize the customer experience , It usually consists of the key information of a package's front package or back package , Integrate a new package , It is used to resist the impact of packet loss .

But the new integrated message is inter frame information redundancy , Redundancy must be reduced in coding , Therefore, the anti packet loss ability is inversely proportional to the coding efficiency . Live in voice App Source code development , The relationship between the two must be balanced , It is necessary to achieve a certain anti packet loss ability , And ensure the efficiency of speech coding .

Take the speech coding of the source code of the voice live broadcast application as an example , There are many more indicators that affect the user experience . Only a reasonable understanding of relevant indicators , In order to achieve better optimization effect . Voice broadcasting APP While conforming to the market development, the source code , Nor can we ignore the user experience .