使用AudioKit录制时如何降低噪音

我正在使用AudioKit录制音频并在录制和播放音频时显示可视化工具。 它运行良好，但录制的音频有很多背景噪音。

有没有办法减少噪音？ 这是准备录音的代码

func prepareForRecording() { AKSettings.defaultToSpeaker = true // Patching outputPlot.node = mic micMixer = AKMixer(mic) micBooster = AKBooster(micMixer) // Microphone monitoring is muted micBooster.gain = 0 // Silent recorder = try? AKNodeRecorder(node: micMixer) if let file = recorder?.audioFile { player = try? AKAudioPlayer(file:file) } player?.completionHandler = playingEnded moogLadder = AKMoogLadder(player) mainMixer = AKMixer(moogLadder, micBooster) AudioKit.output = mainMixer if isMicPresent { AudioKit.stop() AudioKit.start() } currentSeconds = 0 timer?.invalidate() timer = nil }