High-fidelity audio is essential for professional audio scenarios, such as for podcasts and singing competitions. For example, podcasts require stereo and high-fidelity audio. High-fidelity audio refers to an audio profile with a sample rate of 48 Hz and a bitrate of 192 Kbps.
To obtain high-fidelity audio during real-time communications, you can choose the appropriate audio profile based on the audio quality, channel, and scenario.
The Agora SDK provides the
setAudioProfile method to set the appropriate audio profile according to the scenario. This method has two parameters:
|profile||Sets the sample rate, bitrate, encoding mode, and the number of channels.
|scenario||Sets the audio scenario. For example, entertainment, education, or live gaming. The Agora SDK optimizes the noise control and audio quality based on the scenarios.
API call sequence
The following diagram shows how to set the audio profile:
Parameters and applications
You can set the profile and scenario parameters based on the requirements of different applications, such as the audio quality and the audio player.
|No requirement for audio quality|
|scenario||Prioritize the audio quality and effects||GAME_STREAMING|
|Frequently mute/unmute the microphone||CHATROOM_ENTERTAINMENT|
|External audio player||SHOWROOM|
|Gaming noise reduction||CHATROOM_GAMING|
|Stable transmission quality||DEFAULT|
You can also set the profile and scenario parameters based on different applications.
|One-to-one classroom||DEFAULT||DEFAULT||Prioritizes the call quality with smooth transmission and high-fidelity audio.|
|Battle royale game||SPEECH_STANDARD||CHATROOM_GAMING||Noise reduction and transmits the voice only. Reduces the transmission rate and suitable for multiplayer games.|
|Murder mystery game||MUSIC_STANDARD||CHATROOM_
|High-fidelity audio encoding and decoding. No volume or audio quality change when you mute/unmute the microphone.|
|GAME_STREAMING||High-fidelity audio and effects. Adapts to the high-fidelity audio application.|
|SHOWROOM||High-fidelity audio and stereo panning. Support for professional audio hardware.|
|GAME_STREAMING||Prioritizes audio quality. Suitable for transmitting live external audio effects.|
|High-fidelity audio and effects. No volume or audio quality change when you mute/unmute the microphone.|
// FM high-fidelity rtcEngine.setAudioProfile(Constants.AUDIO_PROFILE_MUSIC_HIGH_QUALITY_STEREO, Constants.AUDIO_SCENARIO_SHOWROOM); // Gaming rtcEngine.setAudioProfile(Constants.AUDIO_PROFILE_SPEECH_STANDARD, Constants.AUDIO_SCENARIO_CHATROOM_GAMING); // Entertainment rtcEngine.setAudioProfile(Constants.AUDIO_PROFILE_MUSIC_STANDARD, Constants.AUDIO_SCENARIO_CHATROOM_ENTERTAINMENT); // KTV rtcEngine.setAudioProfile(Constants.AUDIO_AUDIO_PROFILE_MUSIC_HIGH_QUALITY, Constants.AUDIO_SCENARIO_CHATROOM_ENTERTAINMENT);
Call this method before calling the
When you set the volume of a device, you can set either the in-call volume or the media volume.
- You can set the in-call volume during an audio or video call.
- You can set the media volume when you play video, games, or background music.
The differences between the two types of volumes are as follows:
- The in-call volume features acoustic echo cancellation, and should always be set above 0.
- The media volume features a higher audio quality, and can be set as 0.
The audio scenarios in the
setAudioProfile method use different volume settings.
|Audio scenario||Volume setting|
|GAME_STREAMING||All users use the media volume.|
|CHATROOM_ENTERTAINMENT||All users use the in-call volume.|
|CHATROOM_GAMING||All users use the in-call volume.|
Given the system restrictions, the media volume can be set as 0, but not the in-call volume. Therefore, if you want to adjust the volume to 0, ensure that you set an audio scenario that uses the media volume.