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如何解析Microphone無限時長錄制，相信很多沒有經驗的人對此束手無策，為此本文總結了問題出現的原因和解決方法，通過這篇文章希望你能解決這個問題。
這里提供一個解決思路：
1、將microphone設置為循環錄制，即：
Microphone.Start(micName, true,2,16000);
2、每隔一定間隔讀取錄制好的數據，并將它緩存起來。
這里值得一提的是，如果每隔2秒保存一下音頻數據（因為我設置的錄制時間是2秒），
因為代碼運行也需要時間，會導致音頻數據損壞，聲音會出現明顯的斷層現象，所以這里將它分段保存就能解決這種問題，
當麥克風錄制的位置大于音頻的一半的時候，保存上一段音頻，當麥克風錄制完時，保存后一段音頻。
bool isSaveFirstHalf = true;//將音頻從中間分生兩段，然后分段保存 int micPosition; while (!isMicRecordFinished) { if (isSaveFirstHalf) { yield return new WaitUntil(() => { micPosition = Microphone.GetPosition(micName);return micPosition > length * 6 / 10 && micPosition < length; });//保存前半段 micDataTemp = new float[length / 2]; micClip.GetData(micDataTemp, 0); micDataList.AddRange(micDataTemp); isSaveFirstHalf = !isSaveFirstHalf; } else { yield return new WaitUntil(() => { micPosition = Microphone.GetPosition(micName); return micPosition > length / 10 && micPosition < length / 2; });//保存后半段 micDataTemp = new float[length/2]; micClip.GetData(micDataTemp, length / 2); micDataList.AddRange(micDataTemp); isSaveFirstHalf = !isSaveFirstHalf; } }
最后處理一下結束時的音頻
micPosition = Microphone.GetPosition(micName); if (micPosition <= length)//前半段 { micDataTemp = new float[micPosition/2]; micClip.GetData(micDataTemp, 0); } else { micDataTemp = new float[micPosition - length/2]; micClip.GetData(micDataTemp, length/2); }
3、最后通過保存的數據生成新的音頻，即：
AudioClip.Create("RecordClip", micDataList.Count, 1, 16000, false); newAudioClip.SetData(micDataList.ToArray(), 0);
完整代碼如下：
using System;using System.Collections;using System.Collections.Generic;using UnityEngine;public class MicUnlimitedDuration : MonoBehaviour {public delegate void AudioRecordHandle(AudioClip audioClip);public AudioSource audioSource;AudioClip micClip;bool isMicRecordFinished= true;List<float> micDataList = new List<float>();float[] micDataTemp;string micName;public void StartMicrophone() {StopCoroutine(StartMicrophone(null, PlayAudioRecord));StartCoroutine(StartMicrophone(null, PlayAudioRecord));}IEnumerator StartMicrophone(string microphoneName,AudioRecordHandle audioRecordFinishedEvent) {Debug.Log("Start Mic");micDataList = new List<float>();micName = microphoneName;micClip = Microphone.Start(micName, true,2,16000);isMicRecordFinished = false;int length = micClip.channels * micClip.samples;bool isSaveFirstHalf = true;//將音頻從中間分生兩段，然后分段保存int micPosition;while (!isMicRecordFinished){if (isSaveFirstHalf){yield return new WaitUntil(() => { micPosition = Microphone.GetPosition(micName);return micPosition > length * 6 / 10 && micPosition < length; });//保存前半段micDataTemp = new float[length / 2];micClip.GetData(micDataTemp, 0);micDataList.AddRange(micDataTemp);isSaveFirstHalf = !isSaveFirstHalf;}else{yield return new WaitUntil(() => { micPosition = Microphone.GetPosition(micName); return micPosition > length / 10 && micPosition < length / 2; });//保存后半段micDataTemp = new float[length/2];micClip.GetData(micDataTemp, length / 2);micDataList.AddRange(micDataTemp);isSaveFirstHalf = !isSaveFirstHalf;}}micPosition = Microphone.GetPosition(micName);if (micPosition <= length)//前半段{micDataTemp = new float[micPosition/2];micClip.GetData(micDataTemp, 0);}else{micDataTemp = new float[micPosition - length/2];micClip.GetData(micDataTemp, length/2);}micDataList.AddRange(micDataTemp);Microphone.End(micName);AudioClip newAudioClip = AudioClip.Create("RecordClip", micDataList.Count, 1, 16000, false);newAudioClip.SetData(micDataList.ToArray(), 0);audioRecordFinishedEvent(newAudioClip);Debug.Log("RecordEnd");}public void StopMicrophone(){Debug.Log("Stop mic");isMicRecordFinished = true;}void PlayAudioRecord(AudioClip newAudioClip){audioSource.clip = newAudioClip;audioSource.Play();}}
看完上述內容，你們掌握如何解析Microphone無限時長錄制的方法了嗎？如果還想學到更多技能或想了解更多相關內容，歡迎關注億速云行業資訊頻道，感謝各位的閱讀！
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