This paper describes the development of a 3D audio simulator for use in cognitive hearing science studies and also for general 3D audio experimentation. The framework that the simulator is build upon is pyaudio_helper, which is a module of the package scikit-dsp-comm. The simulator runs in a Jupyter notebook and make use of Jupyter widgets for interactive control of audio source positioning in 3D space. 3D audio has application in virtual reality and in hearing assistive devices (HAD) research and development. Digital filters of 200 taps for left and right ears are stored in a look-up table.