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OpenAL Soft - Software 3D Audio
https://openal-soft.org/#:~:text=OpenAL%20provides%20capabilities%20for%20playing%20audio%20in%20a,environmental%20reverb%2C%20are%20available%20through%20the%20EFX%20extension.
OpenAL: Cross Platform 3D Audio
Effects Extensions Guide - OpenAL Soft
https://openal-soft.org/misc-downloads/Effects%20Extension%20Guide.pdf
Although OpenAL provides a number of sophisticated 3D aural effects such as distance based roll-off, directivity and Doppler Shift, it lacks some very important environmental effects: reverberation, reflections, and sound occlusion or obstruction by intervening objects.
OpenAL Soft - Software 3D Audio
OpenAL provides capabilities for playing audio in a virtual 3D environment. Distance attenuation, doppler shift, and directional sound emitters are among the features handled by the API. More advanced effects, including air absorption, occlusion, and environmental reverb, are available through the EFX extension.
OpenAL: Cross Platform 3D Audio
http://openal.org/documentation/
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