# 8D Audio Maker — yeezhan.com
> One-time pay-per-task emergency tool to make your file ready for submission.
> No credits, no balance. One payment unlocks one task result, valid for 24 hours.

Tool domain: https://audio-8d.yeezhan.com
Skill definition: https://audio-8d.yeezhan.com/skill/SKILL.md
API documentation: https://audio-8d.yeezhan.com/api/docs

## What this tool does
Make the sound rotate around your head — viral 8D effect for headphones, speed adjustable 1–30 s per circle.

## Typical user problems
- 8D tracks are everywhere on Shorts and TikTok — the music seems to travel in a circle around the listener. The effect is a rotating stereo pan: the pulsator sweeps the sound field continuously, and mono sources are upmixed to stereo first so the rotation is actually audible.

## Parameters
- speed: number (range 1-30s), required. 旋转一圈秒数

## Pricing
- Watermarked preview: free, no login required
- Final clean output: $0.99 one-time per task
- Require login (email/phone OTP) to complete payment
- Result available for download 24 hours after payment

## Limitations
- Max 200 MB