Audiokinetic Wwise vs Steam Audio SDK

Audiokinetic Wwise is a toolset for creating interactive game audio and motion. It combines an audio authoring application, sound engine, game simulator, plug-in architecture, and Authoring API. Its pipeline covers authoring, simulation, integration, in-game mixing, and real-time profiling. A project can organize sound, voice, music, and motion assets, playback behaviors, Events, simulations, profiling, and platform-specific SoundBanks. Wwise supports spatial audio, interactive music, dialogue management, localization, and audio streaming. Unity and Unreal Engine integrations are available; the Unity package includes a plug-in library, C# SDK API bindings, components, and Editor windows. The free trial is for non-commercial use and limits SoundBanks to 200 media assets. Commercial licenses are per title, with a license required for each platform used. Listed commercial plans start at $8,000, paid once; the price depends on platforms. The free Indie plan is for production budgets below $250K.

Steam Audio SDK is a free toolkit for adding spatial audio to games and VR/AR apps. It renders positional audio binaurally using HRTFs to model sound direction relative to the listener. Environmental features include physics-based sound propagation, occlusion, reflections and reverb. The SDK can spatialize Ambisonics audio and rotate it with listener orientation, and developers can provide HRTFs in AES SOFA format. Multicore CPUs and supported GPUs can accelerate environmental simulation and rendering. Listed integrations include Unity, Unreal Engine, FMOD Studio, Wwise and a C API. The C API is intended for custom game engines, audio middleware and digital audio workstations, and can be called from languages that use external libraries. Supported systems include Windows, Linux, macOS, Android and iOS; SteamOS is also listed as a runtime platform. Integration requirements include Unity 2017.3 or later, Unreal Engine 4.27 or later, FMOD Studio 2.00 or later and Wwise 2023.1.0 or later. The project describes its development tools as being in Beta. Steam Audio is available free to developers, subject to a license agreement.