Quiero registrar el nivel de volumen de un archivo de audio mientras se reproduce, para ver si alcanza un umbral. Intenté usar la función .createAnalyzer pero no puedo resolverlo. Tengo la función "repetir" para verificar cada 0.1 segundos un nuevo volumen, simplemente no sé cómo obtener el volumen.

 const audioContext = new AudioContext(); const audiodiv = document.querySelector('.audiodiv') const buffer = audioContext.createBuffer( 1, audioContext.sampleRate * 1, audioContext.sampleRate ); const channelData = buffer.getChannelData(0) for (let i = 0; i < buffer.length; i++){ channelData[i] = Math.random() * 2 - 1; } //OUTPUT VOLUME const primaryGainControl = audioContext.createGain() primaryGainControl.gain.setValueAtTime(0.01, 0); primaryGainControl.connect(audioContext.destination); //SAMPLE const songbutton = document.createElement('button') songbutton.innerText = 'song' songbutton.addEventListener('click', async () => { const response = await fetch('testsong.wav') const soundBuffer = await response.arrayBuffer() const songBuffer = await audioContext.decodeAudioData(soundBuffer) const songSource = audioContext.createBufferSource() songSource.buffer = songBuffer const songSource2 = audioContext.createBufferSource() songSource2.buffer = songBuffer songSource.playbackRate.setValueAtTime(1, 0) songSource2.playbackRate.setValueAtTime(1, 0) const songGain = audioContext.createGain() songGain.gain.setValueAtTime(0.01, 0) const analyserNode = audioContext.createAnalyser(); analyserNode.connect(primaryGainControl) repeat() function repeat(){ setTimeout(() => { console.log(analyzerNode.VOLUME) repeat() }, 100); } console.log(analyserNode.frequencyBinCount) songSource.connect(primaryGainControl) songSource2.connect(analyserNode) songSource2.start() console.log(songSource2.amplitude) }) audiodiv.appendChild(songbutton)