Picovoice 3.0.2

dotnet add package Picovoice --version 3.0.2                
NuGet\Install-Package Picovoice -Version 3.0.2                
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="Picovoice" Version="3.0.2" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Picovoice --version 3.0.2                
#r "nuget: Picovoice, 3.0.2"                
#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.
// Install Picovoice as a Cake Addin
#addin nuget:?package=Picovoice&version=3.0.2

// Install Picovoice as a Cake Tool
#tool nuget:?package=Picovoice&version=3.0.2                

Picovoice SDK for .NET


Made in Vancouver, Canada by Picovoice

Picovoice is an end-to-end platform for building voice products on your terms. It enables creating voice experiences similar to Alexa and Google. But it entirely runs 100% on-device. Picovoice is

  • Private: Everything is processed offline. Intrinsically HIPAA and GDPR-compliant.
  • Reliable: Runs without needing constant connectivity.
  • Zero Latency: Edge-first architecture eliminates unpredictable network delay.
  • Accurate: Resilient to noise and reverberation. It outperforms cloud-based alternatives by wide margins *.
  • Cross-Platform: Design once, deploy anywhere. Build using familiar languages and frameworks.


  • .NET 6.0


Platform compatible with .NET Framework 4.6.1+:

  • Windows (x86_64)

Platforms compatible with .NET Core 2.0+:

  • Linux (x86_64)
  • macOS (x86_64)
  • Windows (x86_64)

Platforms compatible with .NET Core 3.0+:

  • Raspberry Pi:
    • 2
    • 3 (32 and 64 bit)
    • 4 (32 and 64 bit)
    • 5 (32 and 64 bit)
  • NVIDIA Jetson Nano
  • BeagleBone

Platform compatible with .NET 6.0+:

  • macOS (arm64)


You can install the latest version of Picovoice by adding the latest Picovoice Nuget package in Visual Studio or using the .NET CLI.

dotnet add package Picovoice


Picovoice requires a valid Picovoice AccessKey at initialization. AccessKey acts as your credentials when using Picovoice SDKs. You can get your AccessKey for free. Make sure to keep your AccessKey secret. Signup or Login to Picovoice Console to get your AccessKey.


Create an instance of the engine

using Pv;

const string accessKey = "${ACCESS_KEY}"; // obtained from Picovoice Console (https://console.picovoice.ai/)

string keywordPath = "/absolute/path/to/keyword.ppn";
void wakeWordCallback() => {..}
string contextPath = "/absolute/path/to/context.rhn";
void inferenceCallback(Inference inference)
    // `inference` exposes three immutable properties:
    // (1) `IsUnderstood`
    // (2) `Intent`
    // (3) `Slots`
    // ..

Picovoice handle = Picovoice.Create(accessKey,

handle is an instance of Picovoice runtime engine that detects utterances of wake phrase defined in the file located at keywordPath. Upon detection of wake word it starts inferring user's intent from the follow-on voice command within the context defined by the file located at contextPath. accessKey is your Picovoice AccessKey. keywordPath is the absolute path to Porcupine wake word engine keyword file (with .ppn suffix). contextPath is the absolute path to Rhino Speech-to-Intent engine context file (with .rhn suffix). wakeWordCallback is invoked upon the detection of wake phrase and inferenceCallback is invoked upon completion of follow-on voice command inference.

When instantiated, valid sample rate can be obtained via handle.SampleRate. Expected number of audio samples per frame is handle.FrameLength. The engine accepts 16-bit linearly-encoded PCM and operates on single-channel audio.

short[] GetNextAudioFrame()
    // .. get audioFrame
    return audioFrame;


Picovoice will have its resources freed by the garbage collector, but to have resources freed immediately after use, wrap it in a using statement:

using(Picovoice handle = Picovoice.Create(accessKey, keywordPath, wakeWordCallback, contextPath, inferenceCallback))
    // .. Picovoice usage here

Non-English Models

In order to detect wake words and run inference in other languages you need to use the corresponding model file. The model files for all supported languages are available here and here.


The Picovoice dotnet demo is a .NET Core command line application that allows for processing real-time audio (i.e. microphone) and files using Picovoice.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 is compatible.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
3.0.2 294 1/31/2024
3.0.1 305 11/17/2023
3.0.0 184 10/25/2023
2.2.2 245 8/25/2023
2.1.6 484 11/16/2022
2.1.5 523 6/29/2022
2.1.4 465 6/13/2022
2.1.3 501 5/16/2022
2.1.2 487 3/11/2022
2.1.1 561 2/4/2022
2.1.0 486 1/19/2022
2.0.2 381 11/30/2021
1.1.2 424 9/7/2021
1.1.1 496 5/12/2021
1.1.0 555 12/2/2020
1.0.0 487 10/22/2020