aic-sdk - Node.js Bindings for ai-coustics SDK

Node.js wrapper for the ai-coustics Speech Enhancement SDK.

For comprehensive documentation, visit docs.ai-coustics.com.

Note

This SDK requires a license key. Generate your key at developers.ai-coustics.com.

Installation

npm install @ai-coustics/aic-sdk

Quick Start

const { Model, Processor } = require("@ai-coustics/aic-sdk");

// Get your license key from the environment variable
const licenseKey = process.env.AIC_SDK_LICENSE;

// Download and load a model (or download manually at https://artifacts.ai-coustics.io/)
const modelPath = Model.download("quail-vf-2.0-l-16khz", "./models");
const model = Model.fromFile(modelPath);

// Get optimal configuration
const sampleRate = model.getOptimalSampleRate();
const numFrames = model.getOptimalNumFrames(sampleRate);
const numChannels = 2;

// Create and initialize processor
const processor = new Processor(model, licenseKey);
processor.initialize(sampleRate, numChannels, numFrames, false);

// Process audio (Float32Array, interleaved: [L0, R0, L1, R1, ...])
const audioBuffer = new Float32Array(numChannels * numFrames);
processor.processInterleaved(audioBuffer);

Usage

SDK Information

const { getVersion, getCompatibleModelVersion } = require("@ai-coustics/aic-sdk");

// Get SDK version
console.log(`SDK version: ${getVersion()}`);

// Get compatible model version
console.log(`Compatible model version: ${getCompatibleModelVersion()}`);

Loading Models

Download models and find available IDs at artifacts.ai-coustics.io.

From File

const model = Model.fromFile("path/to/model.aicmodel");

Download from CDN

const modelPath = Model.download("quail-vf-2.0-l-16khz", "./models");
const model = Model.fromFile(modelPath);

Model Information

// Get model ID
const modelId = model.getId();

// Get optimal sample rate for the model
const optimalRate = model.getOptimalSampleRate();

// Get optimal frame count for a specific sample rate
const optimalFrames = model.getOptimalNumFrames(48000);

Configuring the Processor

// Create processor
const processor = new Processor(model, licenseKey);

// Initialize with audio settings
processor.initialize(
  sampleRate,           // Sample rate in Hz (8000 - 192000)
  numChannels,          // Number of audio channels
  numFrames,            // Samples per channel per processing call
  allowVariableFrames   // Allow variable frame sizes (default: false)
);

Processing Audio

// Interleaved audio: [L0, R0, L1, R1, ...]
const buffer = new Float32Array(numChannels * numFrames);
processor.processInterleaved(buffer);

// Sequential audio: [L0, L1, ..., R0, R1, ...]
processor.processSequential(buffer);

// Planar audio: separate buffer per channel
const left = new Float32Array(numFrames);
const right = new Float32Array(numFrames);
processor.processPlanar([left, right]);

Processor Context

const { ProcessorParameter } = require("@ai-coustics/aic-sdk");

// Get processor context
const procCtx = processor.getProcessorContext();

// Get output delay in samples
const delay = procCtx.getOutputDelay();

// Reset processor state (clears internal buffers)
procCtx.reset();

// Set enhancement parameters
procCtx.setParameter(ProcessorParameter.EnhancementLevel, 0.8);
procCtx.setParameter(ProcessorParameter.Bypass, 0.0);

// Get parameter values
const level = procCtx.getParameter(ProcessorParameter.EnhancementLevel);
console.log(`Enhancement level: ${level}`);

Voice Activity Detection (VAD)

const { VadParameter } = require("@ai-coustics/aic-sdk");

// Get VAD context from processor
const vadCtx = processor.getVadContext();

// Configure VAD parameters
vadCtx.setParameter(VadParameter.Sensitivity, 6.0);
vadCtx.setParameter(VadParameter.SpeechHoldDuration, 0.05);
vadCtx.setParameter(VadParameter.MinimumSpeechDuration, 0.0);

// Get parameter values
const sensitivity = vadCtx.getParameter(VadParameter.Sensitivity);
console.log(`VAD sensitivity: ${sensitivity}`);

// Check for speech (after processing audio through the processor)
if (vadCtx.isSpeechDetected()) {
  console.log("Speech detected!");
}

Examples

See the basic.js file for a complete working example.

Documentation

• Full Documentation: docs.ai-coustics.com
• Node.js API Reference: See the index.js for detailed JSDoc documentation
• Available Models: artifacts.ai-coustics.io

License

This Node.js wrapper is distributed under the Apache 2.0 license. The core C SDK is distributed under the proprietary AIC-SDK license.