Cobra VAD — Android Quick Start

Platforms

• Android (5.0+)

Requirements

• Picovoice Account and AccessKey
• Android Studio
• Android device with USB debugging enabled or Android simulator

Picovoice Account & AccessKey

Signup or Login to Picovoice Console to get your AccessKey. Make sure to keep your AccessKey secret.

Quick Start

Setup

1. Install Android Studio .

2. Include mavenCentral() repository in the top-level build.gradle. Then add the following to the app's build.gradle:

dependencies {
    // ...
    implementation 'ai.picovoice:cobra-android:${LATEST_VERSION}' // replace with latest version
}

3. Add the following to the app's AndroidManifest.xml file to enable recording with an Android device's microphone:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

Usage

Create an instance of the Cobra VAD engine:

import ai.picovoice.cobra.Cobra;
import ai.picovoice.cobra.CobraException;

try {
    Cobra cobra = new Cobra("${ACCESS_KEY}");
} catch (CobraException e) { }

Pass in frames of audio to the .process function:

short[] getNextAudioFrame(){
    // .. get audioFrame
    return audioFrame;
}

while(true) {
    try {
        float voiceProbability = cobra.process(getNextAudioFrame());
        // take action based on probability of voice
    } catch (CobraException e) { }
}

Release resources explicitly when done with Cobra:

cobra.delete()

Demo

For the Cobra Android SDK, we offer demo applications that demonstrate how to use the VAD engine on real-time audio streams (i.e. microphone input).

Setup

Clone the Repository

git clone --recurse-submodules https://github.com/Picovoice/cobra.git

Usage

1. Open the Android Activity demo using Android Studio.

2. Copy your AccessKey from Picovoice Console into the ACCESS_KEY variable in MainActivity.java .

3. Run the application using a connected Android device or using an Android simulator.

For more information on our Cobra demos for Android, head over to our Github repository .

Resources