Asterisk.Sdk.VoiceAi.Stt 1.15.3

This package has been deprecated as it is legacy and is no longer maintained.

Suggested Alternatives

Verbara.Sdk.VoiceAi.Stt

dotnet add package Asterisk.Sdk.VoiceAi.Stt --version 1.15.3

NuGet\Install-Package Asterisk.Sdk.VoiceAi.Stt -Version 1.15.3

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Asterisk.Sdk.VoiceAi.Stt" Version="1.15.3" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Asterisk.Sdk.VoiceAi.Stt" Version="1.15.3" />
                    

                            Directory.Packages.props

<PackageReference Include="Asterisk.Sdk.VoiceAi.Stt" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Asterisk.Sdk.VoiceAi.Stt --version 1.15.3

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Asterisk.Sdk.VoiceAi.Stt, 1.15.3"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Asterisk.Sdk.VoiceAi.Stt@1.15.3

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Asterisk.Sdk.VoiceAi.Stt&version=1.15.3
                    

                            Install as a Cake Addin

#tool nuget:?package=Asterisk.Sdk.VoiceAi.Stt&version=1.15.3
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Asterisk.Sdk.VoiceAi.Stt

Speech-to-text providers for Asterisk.Sdk.VoiceAi turn-based pipelines. 7 providers, each implementing ISpeechRecognizer from Asterisk.Sdk.VoiceAi. Native AOT, zero reflection, hand-rolled HTTP/WebSocket clients (no vendor SDK dependencies). MIT licensed.

Providers

Provider	Mode	Notes
Deepgram	Streaming WebSocket	Nova-2 model. Production default. Lowest latency in the catalog (~150ms).
Whisper (local)	Batch	Self-hosted whisper.cpp / OpenAI Whisper API endpoint. Air-gapped option.
Azure Whisper	Batch	Azure OpenAI Whisper deployments. Same format as `Whisper` with Azure auth.
Google Speech	Streaming gRPC over HTTP/2	Standard model. Multi-language support.
Cartesia (Ink-Whisper)	Streaming WebSocket	Newer entrant; competitive latency at lower cost.
AssemblyAI (Universal)	Streaming WebSocket	Universal-2 model with strong technical/code recognition.
Speechmatics	Streaming WebSocket	Enterprise-grade with fine-grained punctuation/casing.

All providers report metrics via the Asterisk.Sdk.VoiceAi.Stt Meter (latency histogram, request counters, error counters tagged by provider name). Health checks (SttHealthCheck) auto-registered when the recognizer is added through DI.

Install

dotnet add package Asterisk.Sdk.VoiceAi.Stt

You almost always want Asterisk.Sdk.VoiceAi (the orchestration package) too:

dotnet add package Asterisk.Sdk.VoiceAi

Quick start (Deepgram)

using Asterisk.Sdk.VoiceAi.Stt.DependencyInjection;

services.AddDeepgramSpeechRecognizer(o =>
{
    o.ApiKey = configuration["Deepgram:ApiKey"]!;
    o.Model = "nova-2";
    o.Language = "en-US";
});

The recognizer is now resolvable as ISpeechRecognizer and registered with the VoiceAi pipeline. Connect AudioSocket on the Asterisk side and you have a streaming STT bridge.

Per-provider DI extensions

Each provider has its own Add*SpeechRecognizer extension (in Asterisk.Sdk.VoiceAi.Stt.DependencyInjection):

services.AddDeepgramSpeechRecognizer(o => { ... });
services.AddWhisperSpeechRecognizer(o => { ... });
services.AddAzureWhisperSpeechRecognizer(o => { ... });
services.AddGoogleSpeechRecognizer(o => { ... });
services.AddCartesiaSpeechRecognizer(o => { ... });
services.AddAssemblyAiSpeechRecognizer(o => { ... });
services.AddSpeechmaticsSpeechRecognizer(o => { ... });

Examples

Examples/VoiceAiExample/ — Deepgram + ElevenLabs + echo handler (default end-to-end demo).
Examples/VoiceAiAssemblyAiExample/ — AssemblyAI Universal-2.
Examples/VoiceAiSpeechmaticsExample/ — Speechmatics enterprise STT.
Examples/VoiceAiCartesiaExample/ — Cartesia Ink-Whisper STT + Sonic-3 TTS.

Native AOT

All HTTP/WebSocket clients hand-rolled with HttpClient / ClientWebSocket. JSON serialization via source-generated JsonSerializerContext (VoiceAiSttJsonContext). 0 trim warnings. See ADR-0014 for the no-vendor-SDK rationale.

License

MIT. Part of the Asterisk.Sdk project.

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- Asterisk.Sdk.VoiceAi (>= 1.15.3)
- Microsoft.Extensions.DependencyInjection.Abstractions (>= 10.0.7)
- Microsoft.Extensions.Diagnostics.HealthChecks (>= 10.0.7)
- Microsoft.Extensions.Http (>= 10.0.7)
- Microsoft.Extensions.Logging.Abstractions (>= 10.0.7)
- Microsoft.Extensions.Options (>= 10.0.7)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
1.15.3	429	5/3/2026
1.15.2	140	4/27/2026
1.15.1	148	4/26/2026
1.15.0	187	4/20/2026
1.14.0	131	4/20/2026
1.13.0	134	4/20/2026
1.12.0	132	4/19/2026
1.11.1	135	4/19/2026
1.11.0	128	4/19/2026
1.10.2	139	4/18/2026
1.10.1	121	4/18/2026
1.10.0	146	4/18/2026
1.9.0	142	4/17/2026
1.8.1	131	4/16/2026
1.8.0	142	4/13/2026
1.7.0	140	4/13/2026
1.6.0	131	4/13/2026
1.5.5	131	4/9/2026
1.5.3	1,108	3/30/2026
1.5.2	149	3/30/2026