Amplitude Audio SDK vs Meta XR Audio SDK

Amplitude Audio SDK is a cross-platform audio engine for games, supporting audio for 2D, 3D, and VR/AR environments. It runs on Android, iOS, Linux, macOS, and Windows; Windows, Linux, and macOS are listed as runtime platforms. Project assets are defined in JSON and compiled into binary sound banks for runtime loading. Audio options include stereo panning, binaural rendering with user HRTF assets, and Ambisonic rendering. Developers can configure processing per runtime platform, including filters, room effects, and spatialization, and extend the pipeline with plugins. A MiniAudio-based default driver and MP3 and WAV decoding are included. Official integrations are listed for O3DE, ezEngine, Godot 4+, and Flax Engine. The SDK is free and open source under Apache-2.0, but it is in beta without an official release; nightly builds are for development, not production. Amplitude Studio is in early access with complimentary access during that phase; its planned free version has non-commercial and feature limits.

Meta XR Audio SDK is a free development SDK for adding spatial audio to immersive VR and MR applications. It runs on Windows and Android, including Meta Quest development targets, and supports Unity, Unreal Engine, FMOD, and Wwise. HRTF-based object and ambisonic spatialization helps listeners locate sounds in three-dimensional space. The SDK also models room acoustics through reflections and reverberation for spatialized audio. Meta documents plugins for each supported engine or middleware. The Unreal plugin works with the Unreal Audio Engine independently of the Meta XR Plugin. Unity packages are distributed through the Meta Horizon Developer Center and Unity Asset Store. Version 85.0 is the final release, and development is feature-frozen. Compatibility with future engine and middleware versions is not guaranteed, and acknowledged bug reports may not receive fixes. The Wwise plugin is supported through Wwise Launcher and Audiokinetic, while Meta’s Wwise documentation will no longer be updated. The listed plan costs nothing.