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Spark TTS

Default

ডিফল্ট English Neutral Spark TTS

Default is a neutral AI voice powered by the Spark TTS text-to-speech model. This standard-tier voice speaks English and delivers high-quality speech synthesis. With moderate generation speed and a quality rating of 4/5, Default is well-suited for content creation with cloned voices and emotional control. The Spark TTS engine is developed by SparkAudio under the Apache 2.0 license, making it safe for commercial use. Key capabilities include: voice cloning, emotion control, style control, prompt-based, 5-second cloning. The Spark TTS model also supports voice cloning — upload a short audio sample to create a custom voice that retains the same quality characteristics.

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Spark TTSModel Information

মডেল Spark TTS
Developer SparkAudio
Quality
Speed Medium
License Apache 2.0
Cloning সমর্থিত
Tier Standard (2 credits/1K chars)
Parameters 500M
Architecture BiCodec + LLM + Flow Matching
Year 2025

Best Use Cases for Default

Recommended applications based on this voice's characteristics

Audiobooks & Narration

Use Default to narrate long-form content with natural prosody and expression.

Video Voiceovers

Add professional narration to YouTube videos, ads, and social media content.

Custom Brand Voice

Clone this voice style with your own audio to create a unique branded TTS voice.

E-Learning & Training

Create engaging training materials, courses, and educational content with clear AI narration.

প্রায়শ জিজ্ঞাসিত প্রশ্ন

Spark TTS by SparkAudio is a text-to-speech model that combines voice cloning with controllable emotion and speaking style. Using just 5 seconds of reference audio, it can clone a voice and then generate speech with different emotions, speeds, and styles while maintaining the cloned voice identity. Spark TTS uses a prompt-based control system.

Spark TTS was developed by SparkAudio and is released under the Apache 2.0 license, which permits commercial use of generated audio.

Spark TTS supports 2 languages: English, Chinese.

Spark TTS is in the Standard tier — 2 credits per 1,000 characters. You can preview any Spark TTS voice for free before generating full audio.

Spark TTS has moderate generation speed. Generation typically takes a few seconds depending on text length.

Spark TTS is rated 4/5 for audio quality on TTS.ai. It produces high-quality, natural-sounding speech.

Yes, Spark TTS supports zero-shot voice cloning. Upload 5-30 seconds of reference audio to create a custom voice.

Yes, Spark TTS is specifically recommended for content creation with cloned voices and emotional control. Its voice cloning, emotion control, style control capabilities make it an excellent choice for this use case.

Yes, Spark TTS is licensed under Apache 2.0, which allows commercial use. Audio generated with Spark TTS voices can be used in videos, podcasts, apps, games, and any other commercial project.

Yes, all voices on TTS.ai use commercially-licensed open-source models (MIT, Apache 2.0). The generated audio is yours to use in videos, podcasts, apps, games, and any other commercial application.

Send a POST request to /api/v1/tts/ with the model name and voice ID. See our API Documentation page for code examples in Python, JavaScript, Go, and cURL.

Yes, click the play button on this page to hear a sample. You can also type custom text on the Text to Speech page and generate a free preview with any voice.

Try Default Now

Type any text and hear it spoken by Default. Free to use.

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