Achieve high audio quality

Some scenarios, such as karaoke sessions, podcasts, and performance-based chats, require a high-quality audio experience. This page shows you how to achieve clear high-definition audio, without noise or interference in your app.

To improve the audio quality experience, consider the following:

Call setAudioProfile [2/2] to set the audio profile to AudioProfileMusicHighQuality (4) and scenario to AUDIO_PROFILE_MUSIC_HIGH_QUALITY (4). It uses a 48 ​​kHz sampling rate, music encoding, two channels, and the maximum encoding rate is 128 Kbps.

virtual int setAudioProfile(AUDIO_PROFILE_TYPE profile) = 0;

Call setAudioScenario to set the audio scenario to high-quality AUDIO_SCENARIO_GAME_STREAMING (3).

virtual int setAudioScenario(AUDIO_SCENARIO_TYPE scenario) = 0;

This section only applies to users using sound cards.

Video SDK turns on 3A by default. In audio processing, 3A stands for Acoustic Echo Cancellation (AEC), Active Noise Suppression (ANS), and Automatic Gain Control (AGC). Sound card devices usually provide some built-in audio processing, such as echo and noise cancellation. Currently, if 3A is enabled in the application layer, it may cause over-processing of the audio signal and interference between different algorithms may impact sound quality. Best practice is that users with sound cards disable the 3A function by calling setParameters.

setParameters("{\"che.audio.aec.enable\":false}") // Turn off echo cancellation

setParameters("{\"che.audio.ans.enable\":false}") // Turn off noise reduction

setParameters("{\"che.audio.agc.enable\":false}") // Turn off gain control

Call setAdvancedAudioOptions to set the number of audio pre-processing channels to AudioProcessingStereo (2), that is, use two channels to collect and send stereo sound.

Note

Call this method before calling joinChannel, enableAudio, and enableLocalAudio.

virtual int setAdvancedAudioOptions(media::base::AdvancedAudioOptions &options) = 0;