Altered Studio vs Festival Speech Synthesis System
Altered Studio
altered.aiFestival Speech Synthesis System
cstr.ed.ac.ukSide by side
| Figure | Altered Studio | Festival Speech Synthesis System |
|---|---|---|
| Price from | $30/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 6 | 1 |
| Spec score · Text-to-Speech Software | 9.5 (#1) | 8.5 (#53) |
| Spec score · Text-to-speech tools | 9.3 (#6) | 8.1 (#94) |
| API access | The FAQ says API access is offered to Enterprise customers for integrating Studio into other systems. | Yes |
| Free plan | Yes | Yes |
| Headquarters | The privacy policy gives Altered Ltd's address as Ground Floor, 298 West End Lane, London NW6 1LN, UK. | Edinburgh, Scotland, United Kingdom |
Plans
Altered Studio
- FreeFree
- Creator$30 a month
- Professional$90 a month
- Creator$360 a year
- Professional$1,080 a year
- EnterprisePriced on request
In their own words
Altered Studio
Altered Studio combines voice transformation and audio production tools for creating professional voice content. Its Speech-to-Speech and Performance-to-Performance morphing changes a voice while retaining the speaker’s performance. Other tools include text-to-speech, voice cloning, AI voice cleaning, denoising, audio editing, DSP effects and batch processing. Studio supports transcription and translation in 75+ languages, and text-to-speech voice-over in 70+ languages. A Rapid Voice Clone can be made from 4–8 seconds of audio; custom voice models are available by contacting Altered. The online Voice Editor can work with Google Drive audio, while RealTime Pro routes audio through a virtual microphone to apps including Discord, Zoom, Microsoft Teams and Google Meet. The free plan includes 3 minutes per month of voice morphing and 10,000 AI tokens. Creator costs $30 a month billed annually; Professional costs $90 a month billed annually. Desktop use requires a Windows PC with an 8GB+ Nvidia GPU, and mobile devices are not currently supported.
Festival Speech Synthesis System
Festival Speech Synthesis System has no write-up on Specifiction yet; its figures are above.