Altered Studio vs IBM Watson Text to Speech
Altered Studio
altered.ai
IBM Watson Text to Speech
ibm.comSide by side
| Figure | Altered Studio | IBM Watson Text to Speech |
|---|---|---|
| Price from | $30/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 6 | 7 |
| Spec score · Text-to-Speech Software | 9.5 (#1) | 8.4 (#63) |
| Spec score · Text-to-speech tools | 9.3 (#6) | 8.6 (#43) |
| API access | The FAQ says API access is offered to Enterprise customers for integrating Studio into other systems. | Yes |
| Free plan | Yes | Yes |
| Integration | Google Drive integration supports importing, sharing and exporting audio files. | Text to Speech can turn incoming text from watsonx Assistant into voice responses for users over the phone. |
| Voice cloning | Users can make a Rapid Voice Clone with 4–8 seconds of audio; custom voice models are available by contacting Altered. | Yes |
Plans
Altered Studio
- FreeFree
- Creator$30 a month
- Professional$90 a month
- Creator$360 a year
- Professional$1,080 a year
- EnterprisePriced on request
IBM Watson Text to Speech
- LitePriced on request
- StandardPriced on request
- PremiumPriced on request
- LiteFree
- StandardPriced on request
- Deploy AnywherePriced on request
- PremiumPriced 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.
IBM Watson Text to Speech
IBM Watson Text to Speech is an API cloud service that converts written text into audio in multiple languages and voices, for applications or watsonx Assistant. Deep neural networks trained on human speech produce its neural voices. SSML controls can change pronunciation, volume, pitch, speed, and other attributes; unusual pronunciations can be specified with IPA or IBM SPR. Listed speaking styles include GoodNews, Apology, and Uncertainty, and voice transformation can adjust strength, pitch, breathiness, rate, and timbre. The service supports nine languages and accepts up to 5,000 input units. Export formats include A-law, Basic audio, FLAC, Linear 16-bit PCM, MP3, Mu-law, Ogg, WebM, and WAV. Deployment options include public, private, hybrid, multicloud, and on-premises infrastructure. Deploy Anywhere is billed by contacting IBM. Premium can include a custom branded neural voice modeled on a chosen speaker using as little as one hour of recordings.