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@picovoice/rhino_manager

RhinoManager

This is a library for inferring intent from speech in the browser.

• Private, as it runs locally within the browser and the voice data does not leave the device.
• Real-time with minimal latency, as it does not depend on network calls.
• Optimized using WebAssembly for algorithm performance.

Compatibility

RhinoManager uses the Web Audio API and WebAssembly, which are supported on all modern browsers (excluding Internet Explorer).

Installation

npm install rhino-manager

Usage

Add the following to your HTML:

<script src="{PATH_TO_WEB_VOICE_PROCESSOR_JS}"></script>
<script src="{PATH_TO_RHINO_MANAGER_JS}"></script>

Replace {PATH_TO_WEB_VOICE_PROCESSOR_JS} with path to src/web_voice_processor.js, which is a dependency of rhino-manager and replace {PATH_TO_RHINO_MANAGER_JS} with the path to src/rhino_manager.js.

Instantiation

The library adds a class to the global scope that can be used to instantiate an instance:

let rhinoWorkerScript = ... // Path to rhino_worker.js within the package
let downsamplingWorkerScript = ... // Path to downsampling_worker.js script within web-voice-processor package

rhinoManager = RhinoManager(rhinoWorkerScript, downsamplingWorkerScript);

Start Processing

Start the detection process:

rhinoManager.start(context, inferenceCallback, errorCallback)

context A context represents the set of expressions (spoken commands), intents, and intent arguments (slots) within a domain of interest. For more details, you can refer to the comments in the C library's header file.

detectionCallback is called after intent inference is finalized.

let detectionCallback = function (info) {
    // do something ...
};

errorCallback is executed when there is an error in the audio capture or processing logic.

Stop Processing

rhinoManager.stop()