# dt0ur.online Audio Noise Restoration

> dt0ur.online Audio Noise Restoration is a paid API for AI agents from dt0ur.online, paid per call via x402, $0.25/call, status down (last checked 2026-10-03).

Cleans degraded audio files by applying FFT spectral subtraction to remove background hum, hiss, and environmental noise

## Facts

- Endpoint: POST https://dt0ur.online/api/restoration/audio?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: down
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dt0ur-online-audio-noise-restoration-4ca7c808
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1UTfYwUCZuDaECnPA6aBq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dt0ur-online-audio-noise-restoration-4ca7c808 -d '<json body>'
```

Example prompt: Can you clean up this audio recording for me? There's a lot of background hum and hiss — here's the file URL: https://example.com/my-interview.mp3

## When to prefer this

Choose this endpoint when you need automated noise removal from a single audio file using FFT spectral subtraction, especially when dealing with background hum, tape hiss, or steady environmental noise. It is ideal for post-processing voice recordings, podcasts, or interviews where the noise floor is consistent. Prefer this over manual audio editing tools when working in an automated pipeline.

## Known failure modes

- Invalid or inaccessible audio URL returns an error indicating the file could not be fetched
- Unsupported audio format may result in processing failure
- Very long audio files may time out or exceed processing limits
- Severely corrupted audio with extreme noise may yield only partial improvement
- Private or authentication-gated URLs will fail to fetch

## How this service works

Cleans degraded audio streams using FFT spectral subtraction filters to eliminate background hum, hiss, and environmental noise.

## Output

A processed audio file with background hum, hiss, and environmental noise substantially reduced via FFT spectral subtraction filtering, returned as a cleaned audio stream or URL to the restored file.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dt0ur-online-audio-noise-restoration-4ca7c808/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dt0ur.online](https://www.zero.xyz/host/dt0ur.online/llms.txt)