Agora Voice Call Overview

Agora Voice Call enables easy and convenient one-to-one or one-to-many voice-only calls with the Agora Video SDK. With a small SDK package size, the Agora Video SDK is applicable to a variety of recreational and business activities.

Agora Voice Call boasts a flexible combination of functions for different scenarios.

Function	Description	Scenario
Audio mixing	Sends the local and online audio with the user's voice to other audience members in the channel.	Online KTV. Interactive music classes.
Play the sound effect files	Enables developers to play specific sound effect files, adjust the volume, and set the playback position of the sound effect files.	Online chess or card games.
Voice changer and reverberation	Provides multiple presets to easily change the voice and set reverberation effects, also supports adjusting the pitch and using the equalization and reverberation modes flexibly.	Online KTV. To change the voice in an online chatroom.
Spatial sound effects	Sets the spatial sound effects for remote users to provide immersive experiences.	FPS games.
Enable two-channel/high-quality sound mode	Enables the two-channel and the high-quality sound mode.	Online music classes. FM applications.
Modify the raw data	Enables developers to obtain and modify the raw voice data to create special effects, such as a voice change.	To change the voice in an online voice chatroom.

Temporarily, the Agora Video SDK Web SDK does not support voice changer and reverberation, sound localization, and modifying the raw data.

Property	Agora Voice Call Specifications
SDK package size	3.14 MB to 11.28 MB
Audio profile	Sample rate: 16 kHz to 48 kHz Support for mono and stereo sound
Audio anti-packet-loss rate	80% (uplink and downlink)

Agora Voice Call is supported on platforms such as iOS, Android, Windows, macOS, Electron, Unity, and Web, and allows for cross-platform connections. The following is a list of supported platforms and their versions.

Platform	Supported Version
Android	≥ 4.1 The Android SDK supports the following ABIs: armeabi-v7a arm64-v8a x86 x86-64
iOS	≥ 9.0
Windows	≥ Windows 7 The Windows SDK supports the following architecture: x86 x86-64
macOS	≥ 10.10 The macOS SDK supports the following architecture: x86-64 arm64
Unity	≥ 2017 The Unity SDK supports the following platforms: Android (armeabi-v7a, arm64-v8a, x86) iOS Windows (x86, x86-64) macOS
Web	See Web SDK Compatibility
Electron	≥ Electron 1.8.3
Flutter	≥ Flutter 1.0.0
React Native	≥ React Native 0.59.10

How many users can Agora Video SDK support at the same time?