Low-Voiced Big Sister's Audio Check ~Spatial Sound & Sync Verification~
Circle Kani Hōsō
A calm, low-voiced older-sister character guides you through checking your headphones' left/right, front/back, and up/down sound positioning, plus audio-video sync. Using a generic dummy-head HRTF for spatial localization and a looping test video, she walks you through each step in a soothing, instructional tone.
