Cobra VAD — iOS Quick Start

Platforms

• iOS (11.0+)

Requirements

• Xcode
• CocoaPods

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 Xcode .

2. Install CocoaPods

3. Import the Cobra-iOS binding by adding the following line to Podfile:

pod 'Cobra-iOS'

4. Run the following from the project directory:

pod install

5. Add the following to the app's Info.plist file to enable recording with an iOS device's microphone

<key>NSMicrophoneUsageDescription</key>
<string>[Permission explanation]</string>

Usage

Create an instance of the Cobra VAD engine:

import Cobra

do {
    cobra = try Cobra(accessKey: "${ACCESS_KEY}")
} catch { }

Pass in frames of audio to the .process function:

func getNextAudioFrame() -> [Int16] {
    return audioFrame;
}

while true {
    do {
        let voiceProbability = try cobra.process(getNextAudioFrame())
        // take action based on the probability of voice
    } catch { }
}

Release resources explicitly when done with Cobra:

cobra.delete()

Demo

For the Cobra iOS 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. Install dependencies:

cd cobra/demo/ios/CobraDemo
pod install

2. Replace let ACCESS_KEY = "${YOUR_ACCESS_KEY_HERE}" in the file ViewModel.swift with a valid AccessKey.

3. Open the CobraDemo XCode project and run the demo.

For more information on our Cobra demos for iOS, head over to our GitHub repository .

Resources