Music Ducking

This example plays an audio file and ducks the playback volume based on the user's microphone input.

Swift

import SwitchboardSDK

class DuckingExample {
    
    let audioEngine = SBAudioEngine()
    let audioGraph = SBAudioGraph()
    let audioPlayerNode = SBAudioPlayerNode()
    let musicDuckingNode = SBMusicDuckingNode()

    init() {
        audioPlayerNode.loadFile("example.mp3")
        audioGraph.addNode(audioPlayerNode)
        audioGraph.addNode(musicDuckingNode)
        audioGraph.connect(audioPlayerNode, musicDuckingNode)
        audioGraph.connect(audioGraph.inputNode, musicDuckingNode)
        audioGraph.connect(musicDuckingNode, audioGraph.outputNode)
        audioEngine.start(audioGraph)
        audioPlayerNode.play()
    }
}

Kotlin

import com.synervoz.switchboard.sdk.AudioEngine
import com.synervoz.switchboard.sdk.audiograph.AudioGraph
import com.synervoz.switchboard.sdk.audiographnodes.AudioPlayerNode
import com.synervoz.switchboard.sdk.audiographnodes.AudioDuckingNode

class DuckingExample {
    
    val audioEngine = AudioEngine()
    val audioGraph = AudioGraph()
    val audioPlayerNode = AudioPlayerNode()
    val audioDuckingNode = AudioDuckingNode()

    init() {
        audioPlayerNode.loadFile("example.mp3")
        audioGraph.addNode(audioPlayerNode)
        audioGraph.addNode(audioDuckingNode)
        audioGraph.connect(audioPlayerNode, audioDuckingNode)
        audioGraph.connect(audioGraph.inputNode, audioDuckingNode)
        audioGraph.connect(audioDuckingNode, audioGraph.outputNode)
        audioEngine.start(audioGraph)
        audioPlayerNode.play()
    }
}