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Online Speech to Text

The VoxSigma SaaS offers three main processing functions : the identification of the language spoken in an audio document, the conversion of recorded speech input to text, and the synchronization of a transcription with the speech signal (also called speech-text alignment). It handles content in many European languages as well as Mandarin and Arabic.

You can integrate our speech-to-text technology today VoxSigma request Form

VoxSigma SaaS Features

  • Protocol : REST API over HTTPS;
    POST, GET and PUT HTTP methods are accepted;
    Both URI encoded requests and MIME multi-part requests are supported;
    Three submission modes: file, streaming, and real-time.
  • Availability : Service available 24/7/365 with failover servers and geographic redundancy
  • Supported functions : speech-to-text transcription, language identification, speech-text synchronization
  • Supported languages : Arabic, Cantonese, Czech, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Italian, Latvian, Lithuanian, Mandarin, Pashto, Persian, Polish, Portuguese, Romanian, Russian, Spanish, Swahili, Swedish, Turkish, Ukrainian and Urdu (more under development)
  • Special features : on the fly language model adaptation, daily updates of language models for broadcast data
  • Audio input : AAC, AIFF, ASF, FLAC, MS-Wave, MPEG, Ogg/Vorbis, Nist Sphere, Sun AU
  • Output : XML data with speaker diarization, language identification tags, word transcription, punctuation, confidence measures, numerical entities and other specific entities
  • Special needs
    • Batch processing offered as an online or offline service to process archives [request form]
    • Model customization is offered on demand to ensure you get the best possible results for your needs [contact form]
SaaS Status


  • We offers various usage plans : pay as you go, daily plan, batch plan, ...
  • For our generic systems and large quantities the price is on the order of 0.01 euro (or $0.01) per minute.
  • Note that our pricing is based on speech duration, i.e. silences are not counted and there is no minimum cost per submission.
  • We offer free trials upon request.


We provide hotline support (via email and phone) for our products and services to help users and system integrators solve problems in the shortest possible timeframe [support form].
Friday May 24, 2024

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