How long should my voice description be?

One to three sentences is the sweet spot. Include at least gender, age, and one or two distinctive qualities. Longer descriptions give more control, but extremely long prompts can sometimes produce inconsistent results, so aim for specific, not exhaustive.

Why does the same prompt produce different voices each time?

Every generation with Qwen3 TTS creates a unique voice. This is by design; it lets you explore variations without changing your description. If you get a voice you like, save it immediately so you can reuse it.

Can an LLM help me write voice prompts?

Yes. Copy this guide into ChatGPT or any LLM, describe the character or use case you have in mind, and ask it to write a prompt using the seven dimensions above. Then paste the result into Voice Design and refine from there.

What if I can't get the voice I want?

Try breaking down what's wrong. If the pitch is off, adjust only the pitch-related words. If the emotion doesn't match, swap the emotion descriptors. Changing one dimension at a time makes it easier to converge on the right result. Also try the structured key-value format; it can give Qwen3 TTS clearer signals than a single flowing sentence.

Can I use Voice Design through the API?

Yes. Both the hosted Cloud API (Starter and Premium plans) and the desktop app's local REST API have a voice design endpoint that accepts the same text descriptions. See the API documentation for details on integrating voice design into your own applications.

Qwen3 TTS Voice Design Prompting Guide: How to Describe the Perfect AI Voice

Qwen3 TTS Voice Design creates a new voice from a text description, with no audio sample or recording. Below are six voices and the exact prompts that made them, then the seven dimensions you can control, a repeatable workflow, and the mistakes that lead to generic results.

Key takeaways

A good prompt says who the voice is (gender, age), how it sounds (pitch, pace, texture, emotion) and where it will be used.

Start with 2 or 3 traits, listen, then add detail one dimension at a time.

The same prompt gives a new voice on every generation, so regenerate before rewriting and save the voices you like.

Vague prompts, celebrity names and keyword lists produce generic voices.

Design a voice free in your browser →

Hear What You Can Design

Every voice below was generated from the exact prompt shown next to it. Press play to hear each one, then use the copy button to drop the prompt into Voice Design.

Street Vendor A rough, fast-talking male voice, mid-thirties, medium pitch with sharp rising inflections, raspy and brash, high energy, suitable for character acting.

Anime Male A low-pitched, male voice, with dramatic pitch swings, intimidating and mischievous, suitable for anime voice-overs. Add dramatic pauses.

Female Wizard Gender: female; Age: fifties; Pitch: low pitch with an eerie resonance; Pace: slow and deliberate with dramatic pauses; Emotion: mysterious, commanding; Characteristics: smooth, powerful; Use case: fantasy game dialogue.

Sultry Female A smooth, alluring young female voice, late twenties, low pitch with a breathy quality, slow deliberate pace, warm and intimate, suitable for late-night radio.

Gruff Warrior A rough, commanding male voice, mid-forties, deep low pitch, hoarse and gravelly, steady measured pace, serious and intense, suitable for fantasy game dialogue or action trailers.

Child A bright, curious child's voice, around 8 years old, high pitch with expressive intonation, moderate pace with occasional excited bursts, cheerful and innocent.

Every prompt above follows the same pattern: who the voice belongs to, how it sounds, and where it will be used. That three-part recipe is what the rest of this guide teaches.

Paste any of these prompts into Voice Design and hear your own version

Try these prompts free

Seven Dimensions of Voice Design with Qwen3 TTS

Qwen3 TTS reads your description across seven voice attributes. The more of them you include, the more control you have over the result.

Dimension	Example values
Gender	Male, female, neutral
Age	Child (5–12), teenager (13–18), young adult (19–35), middle-aged (36–55), elderly (55+)
Pitch	High, medium, low, high-pitched with resonance, deep baritone
Pace	Fast, moderate, slow, deliberate with pauses, rapid-fire
Emotion	Cheerful, calm, serious, gentle, lively, soothing, intense
Characteristics	Magnetic, crisp, hoarse, raspy, breathy, mellow, sweet, rich, gravelly
Use case	Narration, news broadcast, ad voice-over, audiobook, game character, voice assistant

You don't need every dimension for every voice. But the more specific you are, the closer the result matches what you imagine.

Write Your First Prompt in Three Steps

Start simple, then add detail. Begin with two or three traits such as gender, age and one defining quality. Generate a preview, listen, and add more in the next round.

Start with the basics and generate a preview.

A young female voice, mid-twenties, warm tone.

Add more detail based on what you hear.

A young female voice, mid-twenties, warm and smooth tone, moderate pace, suitable for audiobook narration.

Get specific about the qualities that matter most.

A young female voice, mid-twenties, warm and smooth with a slight breathiness. Moderate pace, calm and reassuring delivery. Suitable for guided meditation or audiobook narration.

Regenerate before you rewrite. Each generation with Qwen3 TTS produces a unique voice, even from the same description. If you like the direction but not the exact result, generate again with the same prompt before changing it.

Common Voice Prompt Mistakes

Vague or unstructured descriptions produce generic voices. Specific, multi-dimensional descriptions produce distinctive ones. Here are the five mistakes we see most, with a fix for each.

"A nice voice" is too vague, so Qwen3 TTS has nothing specific to work with. Write: A warm female voice, mid-thirties, gentle and calm, moderate pace
"Make it sound like [celebrity]" fails because Qwen3 TTS doesn't know specific people. Write: A deep, authoritative male voice with a commanding presence and measured pace
"Very very very energetic female" doesn't work because repeating words doesn't increase intensity. Write: An energetic young female, fast pace, bright and enthusiastic, high pitch
"Male" is a single dimension, which produces a generic result. Write: A young adult male, smooth baritone, steady pace, confident and relaxed
"Angry screaming old man fast loud" is a keyword list with no structure. Write: An elderly male voice, high energy, fast-paced, rough and gravelly, shouting with anger

The Iterative Voice Design Workflow

Voice design works best as a loop of describe, listen and refine, not a single shot.

Describe. Write a prompt with 2 to 4 key attributes. Don't try to get it perfect on the first attempt.
Generate and listen. Note what's close and what's off. Is the pitch right but the pace too fast? Is the emotion right but the age wrong?
Refine. Adjust the dimension that needs work. Add detail where the voice fell short, and remove anything that pulled it the wrong way.

Keep a note of prompts that worked. Small wording changes can shift the result a lot, so a reference point saves time.

Advanced Voice Prompting Tips

Use a Structured Format for Complex Voices

A key-value format is clearer than one long sentence when a voice has many requirements. The Female Wizard prompt above uses it:

Gender: male. Age: mid-forties. Pitch: deep, low. Pace: steady, measured. Emotion: serious, intense. Characteristics: rough, hoarse, gravelly. Use case: fantasy game dialogue or action trailers.

This makes it easier to isolate and adjust one dimension without rewriting the whole prompt.

Match Your Preview Text to the Voice

The text the voice reads during preview shapes the result. An energetic voice reading a flat, monotone sentence will sound underwhelming, so give the voice something to perform:

For an excited character, use text with exclamations and questions
For a calm narrator, use smooth, descriptive prose
For a commanding voice, use short, direct sentences

Save and Reuse Your Designed Voice

Once you generate a voice you like, save it to your library in Voice Creator Pro. You can then use it for text-to-speech anytime, just like a cloned voice, without re-describing it and hoping for the same result.

Start Broad, Then Narrow

If you're not sure what you want, start with a broad archetype and generate a few variations:

Elderly British professor

Once you hear something close, add the qualities that would make it perfect:

Elderly British professor, dry wit, measured pace, slight rasp

Voice Prompt Cheat Sheet

Formula: who (gender, age) + how (pitch, pace, emotion, characteristics) + where (use case)
Length: one to three sentences
Complex voices: use the key-value format (Gender: ... Age: ... Pitch: ...)
Fixing a voice: change one dimension per generation
Got a good one: save it to your library right away

You can also paste this whole guide into ChatGPT or any LLM and ask it to write a prompt for the voice you have in mind.