Voice
The voice is the first impression callers get of your business. Nova offers 16 high-quality AI voices in three quality tiers — all with real-time latency below 150 ms.
German voices
Natural voices (default)
Warm-sounding, universally usable voices — recommended for most use cases.
| Name | Gender | Description |
|---|---|---|
| Kore | Female | Warm, natural — default voice |
| Aoede | Female | Friendly, bright sounding |
| Charon | Male | Deep, calm, serious |
| Achernar | Male | Clear, businesslike |
Expressive voices
Emotional, studio-grade voices with natural intonation — ideal for longer conversations and consulting situations.
| Name | Gender | Description |
|---|---|---|
| Franziska | Female | News presenter, 30–40, professional |
| Leonie | Female | Captivating studio quality, expressive |
| Cornelia | Female | Mature, trustworthy |
| Otto | Male | Clear, factual |
| David | Male | Friendly, approachable |
Enterprise voices
Fast, clear voices — optimized for high call volumes and short interactions.
| Name | Gender | Description |
|---|---|---|
| Elara | Female | Clear, professional |
| Aurelia | Female | Warm, welcoming |
| Kara | Female | Neutral, factual |
| Julius | Male | Strong, confident |
| Fabian | Male | Calm, composed |
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Recommendation: Start with Kore — it's set as the default and offers the best balance of naturalness, speed, and versatility.
English voices
For English-speaking callers, two additional voices are available:
| Name | Gender | Description |
|---|---|---|
| Kore (EN) | Female | Warm, natural — English default |
| Charon (EN) | Male | Deep, calm — English |
Configuring the voice in the editor
- Open your assistant in the Nova editor
- Navigate to the Behavior tab
- Click the voice picker and choose your voice
- Click Save
You can change the voice at any time — the change takes effect immediately for the next call.
Best practices
- Mind your industry: Deeper voices (Charon, Julius) sound more serious — ideal for law firms and consulting. Brighter voices (Aoede, Leonie) feel welcoming — good for reception and customer service.
- Consistency: Use the same voice across all assistants of a company to ensure a unified presence.
- Testing: After configuring, call your assistant as a test to check that the voice fits your business.