Rengi Forge: Voice Audio Processor

x402

Rengi Forge: Voice Audio Processor is a paid API for AI agents from rengi.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-22).

Processes a voice recording or TTS take into game-ready audio: high-pass filter, noise reduction, de-essing, loudness normalization to -18 LUFS / -1 dBTP, and optional phrase splitting with a CSV cue sheet.

Price / call$0.1

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StatusUnknown

How this service works

Audio tools: Make a voice recording or TTS take game-ready: rumble high-passed, noise reduced against the measured floor, sibilance tamed, dialogue loudness (-18 LUFS) with a -1 dBTP ceiling, and a long take split into one file per phrase with a CSV cue sheet. Full schema: https://rengi.dev/v1/audio-tools/schema

Output

One or more processed audio files (OGG, WAV, or MP3) with high-pass filtering applied, noise reduction at the requested strength, sibilance controlled, and loudness normalized to the target LUFS (-18 by default) with a -1 dBTP ceiling. If split is enabled, each detected phrase is returned as a separate file along with a CSV cue sheet mapping phrase indices to timing data.

Example use cases

Game VO pipeline for RPG dialogue

“I've got a long WAV file of all my RPG character's voiced lines recorded in one take — can you process it into individual OGG files per phrase at -18 LUFS with moderate noise reduction (0.5) and spit out a CSV cue sheet so I can load them into Godot?”

Cleaning up TTS output for mobile game

“I generated some TTS audio for my mobile game's tutorial but it sounds a bit raw — can you run it through noise reduction at 0.3 strength, normalize it to -18 LUFS with a -1 dBTP ceiling, and give me back a single OGG file without phrase splitting?”

Preparing indie game voice acting takes

“My voice actor recorded all their lines in one long MP3 — please split it into one file per phrase using 500ms silence gaps, apply gentle denoising, normalize loudness to -18 LUFS, and export everything as WAV files with a cue sheet CSV.”

Technical details

Endpoint

POSThttps://rengi.dev/v1/audio-tools/voice?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to prepare voice recordings or TTS audio for use inside a game engine (Unity, Godot, etc.) and want a single-step pipeline that handles noise reduction, loudness normalization to game VO standards (-18 LUFS), de-essing, and automatic phrase splitting with a cue sheet — rather than chaining multiple separate audio tools.

Side effects

Audio file exceeds size or duration limits — returns an error indicating the file is too large
Neither 'audio' nor 'audioUrl' provided — returns a validation error
Unreachable or invalid audioUrl — returns a fetch error
Denoise value out of 0–1 range — schema validation error
targetLufs outside -30 to -10 range — schema validation error
minSilenceMs outside 100–3000 range — schema validation error
Audio format not recognized or corrupted — returns a decode error
Payment not included or insufficient — 402 Payment Required response

Input

Schema · Request body

Field	Type	Description
audio	string	Audio file as base64 (wav, mp3, ogg, flac, m4a).
split	boolean	One file per phrase.
format	string
denoise	number	0 gentle, 1 strong. Strong denoising can make a voice sound metallic.
audioUrl	string	Audio file URL.
targetLufs	number	Dialogue loudness; -18 LUFS is a common game VO target.
minSilenceMs	integer	A pause at least this long separates two phrases.

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