Know exactly how long speech will last before rendering a single byte. Upload 3 voice samples, calibrate speaking velocity, author time-coded scripts, and sync dynamic subtitles with 100% precision.
Clone Your Voice FreeNo more mismatched cutaways or audio overruns on your video timeline.
Record or upload 3 short audio clips to instantly capture natural pitch, inflection, and timbre with studio-grade vocal clarity.
Every voice is calibrated with a bespoke Words-Per-Second metric, allowing real-time estimation as you type script lines.
Preview exact speech timing and fit before submitting compile jobs, eliminating wasted generation credits on trial-and-error renders.
Inject emotional performance tags like [excited], [whisper], or [serious] to guide the delivery nuance of your clone.
Assign different cloned voices to individual speakers or dialogue scenes across a unified video project.
Call duration estimation and voiceover synthesis endpoints asynchronously from Python, Node.js, or n8n automation pipelines.
Build and deploy your custom voice clone in 3 minutes.
Read 3 quick calibration prompts into your microphone or upload clean WAV/MP3 recordings.
VoiceLayer computes the vocal embeddings and assigns your voice's baseline Words-Per-Second profile.
Use your clone in the Production Desk or via REST API to generate synced voiceovers and animated subtitles.
Acoustic profile metrics and voice synthesis specs.
| Parameter | Specification |
|---|---|
| Training Samples Required | 3 audio recordings (10s – 30s recommended) |
| WPS Calibration Precision | Millisecond-level duration calculation per character/word |
| Supported Audio Formats | WAV, MP3, M4A, WebM (44.1kHz / 48kHz studio audio) |
| Subtitle Sync | Instant ASS word-level alignment derived from speech timing |
| API Availability | `POST /api/estimate-durations` and `POST /api/compile` |
VoiceLayer uses state-of-the-art neural voice models to produce natural human cadence, breathing, and emotional pacing indistinguishable from professional voice actors.
Standard TTS tools force you to render audio blindly, leading to audio that overruns video scenes or cuts off early. VoiceLayer's WPS Duration Engine calculates exact timings *before* generation, perfectly synchronizing voice and subtitles to your footage.
Yes. Your voice clones are saved securely to your private Voice Library and are immediately accessible across all production sessions and API calls.