The rendering engine has a Doppler’s effect (frequency change as a result of motion) as well.
It means if there is any degradation of sound over long distances (attenuation), this OpenAL will produce an environmental 3D sound which makes the distant sound real and live. OpenAL is a 3D audio library that is designed to give live effects to a game. The older versions of OpenAL frameworks were open-source, but the recent versions are of a proprietary type. OpenGL and OpenAL API style and conventions are pretty similar. Later on, it was maintained by NVIDIA and now it is largely developed by Creative Technology with the support of Apple. It was originally developed by Loki Entertainment Software. OpenAL (Open Audio Library) is an audio API (Application Programming Interface) that is cross-platform and works efficiently for multichannel 3D positional audio.
