OscillatorNode AudioScheduledSourceNode AudioNode EventTarget Object context: '[object OfflineAudioContext], is same as original: true Error creating node: 'InvalidStateError: Oscillator node type 'custom' requires PeriodicWave to be provided' oscillator node type: 'sine' Error: 'InvalidStateError: Oscillator node type cannot be changed to 'custom'', type is: sine oscillator node type: 'triangle' [object AudioParam] current: 440, default: 440, min: -22050, max: 22050, rate: a-rate [object AudioParam] current: -52, default: 440, min: -22050, max: 22050, rate: a-rate [object AudioParam] current: 22050, default: 440, min: -22050, max: 22050, rate: a-rate [object AudioParam] current: -22050, default: 440, min: -22050, max: 22050, rate: a-rate