Configure audio encoding
Audio quality requirements vary with application scenario. For example. in professional scenarios such as radio stations and singing competitions users are particularly sensitive to audio quality. In such cases, support for dual-channel and high-quality sound is required. High-quality sound means setting a high sampling rate and a high bitrate to achieve realistic audio. Video SDK enables you to configure audio encoding properties to meet such requirements.
This article shows you how to use Video SDK to configure appropriate audio encoding properties and application scenarios in your app.
Understand the tech
Video SDK uses default encoding parameters and a default audio scenario that are suitable for most common applications. If the default settings do not meet your needs, refer to the examples in the implementation section to set appropriate audio encoding properties and an application scenario.
Prerequisites
Ensure that you have implemented the SDK quickstart in your project.
Implementation
This section shows you how to set audio encoding properties and application scenarios for common applications. You use the following APIs to configure audio encoding:
API | Description |
---|---|
create(config.mAudioScenario) | While creating an RtcEngine instance, set the audio application scenario. The default value is AUDIO_SCENARIO_DEFAULT . |
setAudioProfile(profile) | You can set audio encoding properties before or after joining a channel. |
setAudioScenario | You can set an application scenario before or after joining a channel. |
Refer to the following examples to choose the most appropriate settings for your application.
1-on-1 interactive teaching
This scenario requires ensuring call quality and smooth transmission. Add the following code to your project:
Gaming voice chat
This scene requires the transmission of clear human voice with minimal background noise and at a low bitrate. Agora recommends the following settings:
Scripted role play
This scenario requires good sound expression, and no volume or sound quality change when switching microphones. Agora recommends the following settings:
KTV
KTV generally requires high sound quality and good expressiveness for music and singing. Use the following code in your project:
Voice radio
Voice radio generally uses professional audio equipment. It requires high sound quality and stereo. Use the following code in your project:
Music teaching
This scenario requires high sound quality, and support for the transmission of speaker-played sound effects. Agora recommends the following settings:
Dual-teacher classroom
This scenario requires high sound quality with rich sound effects, and no volume or sound quality change when switching microphones. Agora recommends the following settings:
Reference
This section contains content that completes the information on this page, or points you to documentation that explains other aspects to this product.
For more audio settings, see Achieve high audio quality.
Frequently asked questions
Sample projects
Agora offers the following open-source sample project for setting audio encoding properties and application scenario for your reference.