In speech social system is the most common interaction module in voice even wheat, chat rooms, thumb up, exceptional gifts, etc., when the user interactive information involves the voice information of real-time and interactive, with more on the technical implementation will mostly use IM function to achieve, in high concurrency scenarios, chatting on the barrage of very large amount of information, in order to alleviate the pressure of the server, Voice social system will also make some necessary optimizations during development.

Developers are familiar with the fact that a complete audio transmission of a voice social system includes five links: collection, coding, transmission, decoding and playback. In order to quickly build a voice social system, it is necessary to complete the work of each link:

  1. Collection: The voice social system will collect audio data through the microphone on the device. Generally, the audio data will be collected in PCM format.

  2. Encoding: Due to the large volume of the original audio collected by the voice social system, the audio data should be processed by the audio coding and compression technology. ACC encoding format is generally adopted, and MP3 and WMA are also optional schemes. Improve the efficiency of audio storage and transmission through audio coding compression.

  3. Transmission: In the development of voice social system, in order to reduce the delay of audio transmission, RTC transmission protocol is commonly used for the transmission of audio data, the global end-to-end delay is less than 300ms, especially in the weak network environment, also can ensure the quality of audio communication.

  4. Decoding: Decoding of the voice social system is actually the reverse process of coding, which is to extract the original audio data from the encapsulated audio data, that is, to restore the audio data to the audio data that can be played directly by the sound card.

  5. Playback: after decoding the audio, you can get the audio frame submitted to the sound card for playback.

After understanding the audio transmission process in the whole voice social system, we can have a more accurate understanding of the interactive functions such as voice link, chat room and so on. In order to ensure the stability of the voice social system and improve the user experience, what have been optimized for the interactive functions during the development?

  1. Voice chat: One of the most important functions in the voice social system is probably one-to-one voice chat. In order to ensure the sound quality of the voice chat between users, without lag and high delay, real-time audio and video transmission is adopted.

  2. Chat rooms: in voice chat function, the speech social system USES a variety of technology support, first of all, so the chat feature is supported by IM instant messaging, chat information interaction of the second top wheat is used in real-time audio and video, finally the information in the audience in a chat room interaction is to use the bypass live broadcast.

  3. Gift appreciation function: Gift appreciation function is the main traffic realization method in the voice social system. It is usually realized by using the custom MESSAGE in IM. When users receive or send gifts, the gift graph corresponding to the custom message will be rendered.

Voice social system is a system with a lot of information interaction, so it will face high concurrency scenarios. The technical means of distributed deployment of servers can relieve the pressure on a single server and improve the fluency of voice social system in high concurrency scenarios. In fact, there are still many technical details involved in the whole voice social system. With the development of The Times, improvement and optimization is the inevitable way.

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