Azure Speech

Included skill

Azure Speech

Expert knowledge for Azure Speech in Foundry Tools development including troubleshooting, best practices, decision making, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when building STT/TTS containers, Voice Live chats, custom voices/avatars, telephony flows, or batch synthesis, and other Azure Speech in Foundry Tools related development tasks. Not for Azure Content Understanding in Foundry Tools (use azure-content-understanding), Azure AI Language (use azure-language-service), Azure Translator (use azure-translator), Azure AI Vision (use azure-ai-vision).

Source: /skills/azure-speech/SKILL.md

Azure Speech in Foundry Tools Skill

This skill provides expert guidance for Azure Speech in Foundry Tools. Covers troubleshooting, best practices, decision making, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., [security.md](security.md)), use read_file on the linked reference file

IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

  • Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
  • Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

Category Lines Description
Troubleshooting L36-L45 Diagnosing and fixing common Azure Speech issues across TTS, STT, SDK, containers, CRL compatibility, and retrieving session/transcription IDs for support.
Best Practices L46-L61 Guidance on preparing audio/video data, improving transcription and synthesis quality/latency, designing microphones, managing SDK memory, handling live voice chats, and backing up custom voice resources.
Decision Making L62-L76 Guides for choosing Azure Speech/Embedded/Voice Live options, checking language/voice availability, and step-by-step migrations between Speech/voice REST APIs and legacy features.
Limits & Quotas L77-L86 Limits, quotas, regions, and availability for Azure Speech services, including TTS FAQs, supported languages/voices, and lifecycle/deployment rules for custom and professional voice models.
Security L87-L100 Securing Azure AI Speech: auth (Entra, RBAC), network isolation (VNet, Private Link, sovereign clouds), encryption/BYOK, BYOS storage, and consent/ID workflows for personal and professional voice.
Configuration L101-L136 Configuring Azure Speech and Voice Live behavior: audio inputs, logging, containers, SSML, pronunciation, avatars, batch/real-time settings, and SDK/CLI connection, tracing, and latency options.
Integrations & Coding Patterns L137-L167 Patterns and APIs for integrating Azure Speech and Voice Live: telephony, REST/SDK usage, TTS/avatars, translation, transcription (incl. LLM), custom models, agents, WebSockets, and automation.
Deployment L168-L178 Deploying and scaling Azure AI Speech: Docker/Kubernetes containers, on-prem STT/TTS, custom speech models/endpoints, language ID, and batch/long-form synthesis workflows.

Troubleshooting

Topic URL
Resolve common Azure Speech text-to-speech issues https://learn.microsoft.com/en-us/azure/ai-services/speech-service/faq-tts
Retrieve Speech to text session and transcription IDs for support https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-get-speech-session-id
Resolve common Azure Speech in Foundry issues https://learn.microsoft.com/en-us/azure/ai-services/speech-service/known-issues
Resolve Azure AI Speech SDK CRL compatibility issues https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-to-sdk-1-48-2
Troubleshoot Azure Speech containers deployment issues https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-faq
Diagnose and fix common Azure Speech SDK issues https://learn.microsoft.com/en-us/azure/ai-services/speech-service/troubleshooting

Best Practices

Topic URL
Prepare and locate audio data for batch transcription https://learn.microsoft.com/en-us/azure/ai-services/speech-service/batch-transcription-audio-data
Create high-quality human-labeled speech transcriptions https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-custom-speech-human-labeled-transcriptions
Prepare training data for professional custom voice https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-custom-voice-training-data
Apply best practices to reduce Speech synthesis latency https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-lower-speech-synthesis-latency
Track and manage Azure Speech SDK memory usage https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-track-speech-sdk-memory-usage
Handle interrupted responses in Voice Live chat history https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-auto-truncation
Use phrase lists to improve Azure Speech accuracy https://learn.microsoft.com/en-us/azure/ai-services/speech-service/improve-accuracy-phrase-list
Apply keyword recognition design and accuracy guidelines https://learn.microsoft.com/en-us/azure/ai-services/speech-service/keyword-recognition-guidelines
Record high-quality samples for custom voice training https://learn.microsoft.com/en-us/azure/ai-services/speech-service/record-custom-voice-samples
Back up and recover custom Speech and Voice resources https://learn.microsoft.com/en-us/azure/ai-services/speech-service/resiliency-and-recovery-plan
Design microphone arrays optimized for Speech SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-sdk-microphone
Prepare high-quality video samples for custom avatars https://learn.microsoft.com/en-us/azure/ai-services/speech-service/text-to-speech-avatar/custom-avatar-record-video-samples

Decision Making

Topic URL
Evaluate custom voice lite before professional voice https://learn.microsoft.com/en-us/azure/ai-services/speech-service/custom-neural-voice-lite
Evaluate device suitability for embedded speech models https://learn.microsoft.com/en-us/azure/ai-services/speech-service/embedded-speech-performance-evaluations
Migrate Speech to text REST API from v3.2 to 2024-11-15 https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-2024-11-15
Migrate Speech to text REST API 2024-11-15 to 2025-10-15 https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-2025-10-15
Migrate from retired Speech intent recognition to Language or OpenAI https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-intent-recognition
Migrate from Long Audio API to Batch synthesis https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-to-batch-synthesis
Migrate from v3 text-to-speech to custom voice REST API https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-to-custom-voice-api
Migrate Speech-to-text REST from v3.0 to v3.1 https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-v3-0-to-v3-1
Migrate Speech to text REST API v3.1 to v3.2 https://learn.microsoft.com/en-us/azure/ai-services/speech-service/migrate-v3-1-to-v3-2
Assess capabilities and regions for personal voice https://learn.microsoft.com/en-us/azure/ai-services/speech-service/personal-voice-overview
Select models and pricing for Voice Live API https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live

Limits & Quotas

Topic URL
Manage custom speech model and endpoint lifecycle https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-custom-speech-model-and-endpoint-lifecycle
Check language and voice availability for Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/language-support
Deploy professional voice models to custom endpoints https://learn.microsoft.com/en-us/azure/ai-services/speech-service/professional-voice-deploy-endpoint
Train professional voice models and understand duration https://learn.microsoft.com/en-us/azure/ai-services/speech-service/professional-voice-train-voice
Find supported regions and endpoints for Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/regions
Reference quotas and limits for Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-services-quotas-and-limits

Security

Topic URL
Configure BYOS storage for Azure Speech resources https://learn.microsoft.com/en-us/azure/ai-services/speech-service/bring-your-own-storage-speech-resource
Configure Microsoft Entra auth for Azure AI Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-configure-azure-ad-auth
Configure consent requirements for personal voice projects https://learn.microsoft.com/en-us/azure/ai-services/speech-service/personal-voice-create-consent
Create personal voice projects with consent and IDs https://learn.microsoft.com/en-us/azure/ai-services/speech-service/personal-voice-create-project
Add and manage voice talent consent for professional voice https://learn.microsoft.com/en-us/azure/ai-services/speech-service/professional-voice-create-consent
Assign Azure RBAC roles for Speech resources https://learn.microsoft.com/en-us/azure/ai-services/speech-service/role-based-access-control
Configure Speech service in Azure sovereign clouds https://learn.microsoft.com/en-us/azure/ai-services/speech-service/sovereign-clouds
Manage Speech service data-at-rest encryption and keys https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-encryption-of-data-at-rest
Secure Speech service with Virtual Network service endpoints https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-service-vnet-service-endpoint
Secure Azure AI Speech with Private Link endpoints https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-services-private-link

Configuration

Topic URL
Configure Batch synthesis properties for text-to-speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/batch-synthesis-properties
Check status and retrieve batch transcription results https://learn.microsoft.com/en-us/azure/ai-services/speech-service/batch-transcription-get
Configure BYOS storage for Speech to text https://learn.microsoft.com/en-us/azure/ai-services/speech-service/bring-your-own-storage-speech-resource-speech-to-text
Configure language ID and diarization in Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/configure-language-identification-diarization
Define UPS phonetic pronunciations for Speech to text https://learn.microsoft.com/en-us/azure/ai-services/speech-service/customize-pronunciation
Configure OpenSSL on Linux for Azure Speech SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-configure-openssl-linux
Control and monitor Speech SDK service connections https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-control-connections
Configure post-processing options for Azure speech recognition https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-post-processing
Configure real-time speech recognition with Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-recognize-speech
Select and configure audio input devices in Speech SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-select-audio-input-devices
Use visemes for facial animation with Speech service https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-speech-synthesis-viseme
Configure Speech SDK audio input streams https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-use-audio-input-streams
Configure compressed audio input for Speech SDK and CLI https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-use-codec-compressed-audio-input-streams
Enable and configure Speech SDK diagnostic logging https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-use-logging
Configure interim responses for Voice Live latency https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-interim-response
Configure OpenTelemetry tracing for Voice Live SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-telemetry
Configure audio and transcription logging for Speech recognition https://learn.microsoft.com/en-us/azure/ai-services/speech-service/logging-audio-transcription
Create and manage personal voice speaker profiles https://learn.microsoft.com/en-us/azure/ai-services/speech-service/personal-voice-create-voice
Upload and validate training datasets for professional voice https://learn.microsoft.com/en-us/azure/ai-services/speech-service/professional-voice-create-training-set
Configure Azure Speech text-to-speech avatar options https://learn.microsoft.com/en-us/azure/ai-services/speech-service/quickstarts/get-started-text-to-speech-avatar
Configure Speech containers storage, logging, and security https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-configuration
Set up fast transcription containers for Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-ft
Configure and run Azure Speech-to-text containers https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-stt
Control speech output using SSML configuration https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-synthesis-markup
Configure pronunciation with SSML phonemes and lexicons https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-synthesis-markup-pronunciation
Structure SSML documents and events for Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-synthesis-markup-structure
Configure Speech CLI datastore search order and files https://learn.microsoft.com/en-us/azure/ai-services/speech-service/spx-data-store-configuration
Configure output destinations for Speech CLI results https://learn.microsoft.com/en-us/azure/ai-services/speech-service/spx-output-options
Configure batch synthesis properties for TTS avatars https://learn.microsoft.com/en-us/azure/ai-services/speech-service/text-to-speech-avatar/batch-synthesis-avatar-properties
Reference Voice Live API events, models, and settings (2025-10-01) https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-api-reference-2025-10-01
Reference Voice Live API events and settings (2026-01-01-preview) https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-api-reference-2026-01-01-preview
Configure language and locale support in Voice Live https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-language-support

Integrations & Coding Patterns

Topic URL
Integrate Speech service with call center telephony https://learn.microsoft.com/en-us/azure/ai-services/speech-service/call-center-telephony-integration
Call Azure Speech fast transcription API in Foundry https://learn.microsoft.com/en-us/azure/ai-services/speech-service/fast-transcription-create
Use Speech SDK APIs to handle recognition results https://learn.microsoft.com/en-us/azure/ai-services/speech-service/get-speech-recognition-results
Integrate custom models with Voice Live API (BYOM) https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-bring-your-own-model
Implement text-to-speech synthesis with Speech SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-speech-synthesis
Implement speech translation with Azure Speech SDK https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-translate-speech
Integrate Voice Live with Foundry Agent Service https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-agent-integration
Implement function calling in Voice Live sessions https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-function-calling
Integrate Voice Live with Foundry hosted agents https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-hosted-agent-integration
Connect MCP servers to Voice Live sessions https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-mcp-server
Add proactive greeting messages to Voice Live agents https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-voice-live-proactive-messages
Use Azure LLM Speech API for transcription https://learn.microsoft.com/en-us/azure/ai-services/speech-service/llm-speech
Use MAI-Transcribe with LLM Speech API https://learn.microsoft.com/en-us/azure/ai-services/speech-service/mai-transcribe
Integrate Azure Speech with Azure OpenAI chat https://learn.microsoft.com/en-us/azure/ai-services/speech-service/openai-speech
Integrate Azure Personal Voice into applications https://learn.microsoft.com/en-us/azure/ai-services/speech-service/personal-voice-how-to-use
Use Power Automate connector for Speech batch transcription https://learn.microsoft.com/en-us/azure/ai-services/speech-service/power-automate-batch-transcription
Use Speech to text REST API endpoints and parameters https://learn.microsoft.com/en-us/azure/ai-services/speech-service/rest-speech-to-text
Call Azure Speech-to-text short audio REST API https://learn.microsoft.com/en-us/azure/ai-services/speech-service/rest-speech-to-text-short
Call Speech text to speech REST API endpoints https://learn.microsoft.com/en-us/azure/ai-services/speech-service/rest-text-to-speech
Use SSML phonetic alphabets with Azure Speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-ssml-phonetic-sets
Use SSML to customize Azure Speech voices https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-synthesis-markup-voice
Generate Speech service REST clients from Swagger https://learn.microsoft.com/en-us/azure/ai-services/speech-service/swagger-documentation
Control text to speech avatar gestures with SSML https://learn.microsoft.com/en-us/azure/ai-services/speech-service/text-to-speech-avatar/avatar-gestures-with-ssml
Implement real-time text-to-speech avatar streaming https://learn.microsoft.com/en-us/azure/ai-services/speech-service/text-to-speech-avatar/real-time-synthesis-avatar
Use Voice Live WebSocket API events and models https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-api-reference-2026-04-10
Integrate with Voice Live preview WebSocket API https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-api-reference-2026-06-01-preview
Implement Azure Voice Live real-time WebSocket integration https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live-how-to

Deployment

Topic URL
Use Batch synthesis API for long-form text-to-speech https://learn.microsoft.com/en-us/azure/ai-services/speech-service/batch-synthesis
Deploy custom speech models and endpoints https://learn.microsoft.com/en-us/azure/ai-services/speech-service/how-to-custom-speech-deploy-model
Scale Speech containers with batch processing kit https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-batch-processing
Run custom speech to text containers with Docker https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-cstt
Deploy and run Speech containers with Docker https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-howto
Run Speech containers on Kubernetes with Helm https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-howto-on-premises
Deploy language identification containers with Docker https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-lid
Deploy neural text to speech containers with Docker https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-container-ntts