In the world of electro-stimulation, "audio stim" refers to using audio signals to drive a stimulator. The WAV format is preferred because it is and lossless , preserving the exact waveforms needed to trigger specific electrical sensations without the artifacts found in compressed formats like MP3.
correspond to different physical electrodes or sensations, which are interleaved within the data chunk. Specialized Tools and Analysis Tutorial: How to Write a Wav File in C 28 Nov 2023 — Estim Wav Files