Resemble Speech-to-SPEECH

Your performance, converted to any voice.

Record the delivery yourself and STS converts it to any target voice, keeping your pacing, emotion, and emphasis intact.

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Model

Powered by Resemble Core STS v2

Speech-to-speech (STS) lets you demonstrate the delivery instead of leaving it to the model. Record the line, pass a target voice UUID, and the engine converts your voice while keeping your performance unchanged.
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1
Recorded take converts to as many target voices as needed.
RESEMBLE STS Production coverage

Does converion kill the performance? Never.

Pacing and rhythm from the donor recording
PRESERVED
PRESERVED
Target voice identity
CONVERTED
CONVERTED
Emotional delivery and emphasis
PRESERVED
PRESERVED
Pitch (optional transpose: -10.0 to +10.0)
ADJUSTABLE
ADJUSTABLE
Inflection and natural speech patterns
PRESERVED
PRESERVED
Accent, tone, or speaking style (via prompt)
STEERABLE
STEERABLE
OUR CAPABILITIES

Direct the delivery yourself and convert it to any voice you need.

Because re-recording to fix a missed beat costs more than the original session.
Human-guided conversion
Record the line and the engine converts it to the target voice, preserving timing, inflection, and emotion.
One take, many voices
Convert one recorded performance to as many target voices as needed, producing multiple character outputs from a single session.
Prompt-guided steering
Adjust accent, tone, or speaking style via the prompt attribute after conversion, with no re-recording required.
Resemble STS use case coverage

When going back to the studio isn't an option.

Every use case below replaces a recording session that would otherwise need to happen.

Games & interactive media
The problem:
TTS produces flat character dialogue. Booking talent for every line is expensive and hard to scale.
Resemble AI solution:
One actor records the performance and STS converts it to every character voice, all from a single session.
Film & ADR
The problem:
Directing TTS to deliver a specific emotional beat requires repeated prompting with inconsistent results.
Resemble AI solution:
Record the intended delivery and STS converts it to the talent's voice exactly as performed.
Voice agents & IVR
The problem:
Robotic TTS cadence reduces listener trust and increases drop-off in high-stakes interactions.
Resemble AI solution:
Agents sound like a real person delivered the line.
Localization
The problem:
Translated scripts lose emotional cadence when re-synthesized by TTS.
Resemble AI solution:
Record in the source language and convert to the target voice with delivery intact.
Audiobooks
The problem:
Long-form narration requires consistent emotional range that TTS cannot sustain across hours of content
Resemble AI solution:
Narrate with full control and convert to any voice with the performance intact.
SOC2 Type II
Enterprise plans
EU AI Act ready
Mandatory Aug 2026
GDPR Compatible
On-prem available
HIPAA Compatible
Air-gapped deployment
SSO / SAML
Enterprise identity
C2PA Standard
Content provenance
trusted in production

Trusted where it matters most

When the stakes are real, rely on Resemble AI
Case studiesContact us
AI Voice Reconstruction
AI narration for The Andy Warhol Diaries, generated from three minutes of source audio.
Personalized TTS
354,000 personalized audio messages generated. 7x revenue impact on fan engagement.
Multilingual Audio
Production-grade voice generation at scale for educational content across multiple languages.
Consumer Voice Cloning
Parents record 25 sentences. Resemble clones the voice. Bedtime stories narrated in the parent's own voice. 4.8 App Store rating.
INTEGRATIONS AND DEPLOYMENTS

Go live in hours, not sprints.

WAV input: single speaker, max 50 MB, max 5 min
Output: WAV (default) or MP3
Sample rates: 8000, 16000, 22050, 32000, 44100 Hz
Streaming: supported on all model versions
Requires 10+ minutes of dataset for target voice
On-prem and air-gapped environments available
View API Docs
Frequently asked questions
What is the difference between STS and TTS?
TTS generates speech from text, the AI decides the delivery. STS takes a recorded human performance and converts the voice, preserving how it was delivered.
Do I need to be a voice actor to use STS?
No. Record yourself delivering the line clearly. Quality depends on a clean single-speaker WAV, not professional voice acting.
Can I convert one recording to multiple voices?
Yes. Submit the same donor WAV with different target voice UUIDs. Each conversion preserves the original performance in a different voice.
How do I steer the output without re-recording?
Use the prompt attribute on the <resemble:convert> tag. Specify accent, tone, or speaking style (e.g. 'Speak in a British accent', 'Speak with excitement'). No additional recording required.
What voice does the target need to be?
Any Resemble voice: cloned or from the voice library. The target voice must have 10+ minutes of training dataset.
How quickly can we integrate?
No. If you're already integrated with Resemble TTS, STS requires only a change to the SSML input.
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