Introduction

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 kHz and a bitrate of 128 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.

Sample project

We provide an open-source demo project that implements setting audio profile on GitHub. You can try the demo and view the source code.

Implementation

Before setting the audio profile, ensure that you have implemented the basic real-time communication functions in your project. For details, see Start a Call or Start Interactive Live Streaming.

The Agora SDK provides the setAudioProfile method to set the appropriate audio profile according to the scenario.

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.

You can also set the profile and scenario parameters based on different applications.

Sample code

// 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);

API reference

• setAudioProfile

Considerations

Call this method before calling the joinChannel method.

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 cannot be set as 0.
• The media volume can be set as 0.

The audio scenarios in the setAudioProfile method use different volume settings.

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.

Reference

When setting the audio profile, you can also refer to the following articles:

• How can I prevent volume changes when the users switch their roles in an interactive live streaming channel?