What is Azure Speech?
Azure Speech is an AI service for speech processing that converts spoken language to text and synthesizes text into natural speech. Since the introduction of Microsoft Foundry, the service belongs to the so-called Foundry Tools and enables real-time transcription, speech translation, voice assistants, and accessible applications.
Core Features
- Speech-to-Text: Transcribes spoken language in real time, as fast transcription for individual files, or as batch processing of large audio volumes
- Text-to-Speech: Generates natural-sounding speech from text with standard and custom neural voices
- Speech Translation: Translates spoken language into other languages in real time
- Text-to-Speech Avatar: Creates synthetic video avatars with a speaking, AI-generated voice
- Voice Live: Enables natural, conversation-based real-time interaction between users and AI agents
- Custom Speech: Train models with domain-specific vocabulary for higher recognition accuracy
Typical Use Cases
Meeting Transcription: Companies automatically transcribe meetings, making them searchable. Integration with Microsoft Teams enables live captions and post-meeting transcript editing.
Voice Assistants and Call Centers: Call centers use speech-to-text and Voice Live for intelligent, conversation-based interactions. Customer concerns are automatically recognized and routed to the right department.
Accessibility: Apps and websites offer read-aloud functionality for visually impaired users. Text-to-speech makes content accessible while speech-to-text enables voice input.
Benefits
- Natural-sounding voices through neural text-to-speech
- Customizable to industry vocabulary and accents via Custom Speech
- Container deployment possible for on-premises and compliance scenarios
- SDKs, CLI, and REST APIs for all major programming languages and platforms
Integration with innFactory
As a Microsoft Solutions Partner, innFactory supports you with Azure Speech: we implement transcription solutions for meetings and call centers, build voice-controlled interfaces with Voice Live, and integrate speech capabilities into accessible applications.
Typical Use Cases
Frequently Asked Questions
What is Azure Speech (Foundry Tools)?
Azure Speech is Microsoft's speech processing service: speech-to-text, text-to-speech, speech translation, and speaker capabilities. Since the introduction of Microsoft Foundry, the service is marketed as part of the Foundry Tools; the underlying technology and APIs remain compatible with the previous Azure AI Speech API.
Which languages does Azure Speech support?
Speech-to-text supports a very wide range of languages and dialects, and text-to-speech offers natural neural voices in numerous languages. The exact, current language list is maintained in the official documentation.
Can I create custom voices?
Yes, Custom Voice lets you train a brand-specific voice from your own speech recordings. Access to Custom Voice is classified as a 'Limited Access' feature: Microsoft reviews the use case under its Responsible AI policies before granting access.
Does speech-to-text work in real time?
Yes, real-time transcription delivers results while speaking, fast transcription processes individual audio files with very low latency, and batch transcription is suited for large volumes of pre-recorded audio.
Can Azure Speech run on-premises?
Yes, Speech containers can be deployed on-premises or in your own environment. This suits use cases with strict data residency or compliance requirements.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Azure (official documentation). This page does not represent an offer by Azure.
