如何在swift中创建一个处理格式为16的音频文件？

Question

这是我的代码，processingFormat始终是，如何使其成为Int16？

   `let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!

    let audioURL = documentDirectory.appendingPathComponent("recording_\(UUID().uuidString).wav")
    let int16Format = AVAudioFormat(commonFormat: .pcmFormatInt16, sampleRate: 16000, channels: 1, interleaved: true)!

    do {
        audioFile = try AVAudioFile(forWriting: audioURL, settings: int16Format.settings)
        if let processingFormat = audioFile?.processingFormat {
            print("Processing format: \(processingFormat)")
        }
    } catch {
        print("Error creating audio file: \(error.localizedDescription)")
    }

Answer 1

我明白了！应该是

init（forWriting：URL，设置：[String：Any]，commonFormat：AVAudioCommonFormat，交错：Bool）