Record Microphone to File

Hi, i am trying to record from microphone to a file.

Specifically i want the user to press a button, which than starts the recording until another button is pressed which ends the recording process.

Unforunately i was unable to find a solution for this simple task.
The Microphone.Start() uses a predetermined time.

I found a Asset called G-Audio which can do just this. (Example 5, free Asset) But it is so complicated and not well deocumented that i can not extract this functionality.

Is there anyone who can help with this problem? I am Googling for 2 Days, it seems as if noone could solve this problem or noone posted a solution to this.

 

Here's the answer I posted to the short lived new Unity forum! As I mentioned there, it stills needs some kind of fading so that the loops don't click each time they repeat themselves. Start a recording with the Space bar, and toggle playback of loops using the numbers keys, the first loop being number 1.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections.Generic;
3.  
4. public class CubeController : MonoBehaviour {
5.  
6.     bool isRecording = true;
7.     private AudioSource audioSource;
8.  
9.     //temporary audio vector we write to every second while recording is enabled..
10.     List<float> tempRecording = new List<float>();
11.  
12.     //list of recorded clips...
13.     List<float[]> recordedClips = new List<float[]>();
14.  
15.     void Start()
16.     {
17.         audioSource = GetComponent<AudioSource>();
18.         //set up recording to last a max of 1 seconds and loop over and over
19.         audioSource.clip = Microphone.Start(null, true, 1, 44100);
20.         audioSource.Play();
21.         //resize our temporary vector every second
22.         Invoke("ResizeRecording", 1);
23.     }
24.  
25.     void ResizeRecording()
26.     {
27.         if (isRecording)
28.         {
29.             //add the next second of recorded audio to temp vector
30.             int length = 44100;
31.             float[] clipData = new float[length];
32.             audioSource.clip.GetData(clipData, 0);
33.             tempRecording.AddRange(clipData);
34.             Invoke("ResizeRecording", 1);
35.         }
36.     }
37.  
38.     void Update()
39.     {
40.         //space key triggers recording to start...
41.         if (Input.GetKeyDown("space"))
42.         {
43.             isRecording = !isRecording;
44.             Debug.Log(isRecording == true ? "Is Recording" : "Off");
45.  
46.             if (isRecording == false)
47.             {
48.                 //stop recording, get length, create a new array of samples
49.                 int length = Microphone.GetPosition(null);
50.              
51.                 Microphone.End(null);
52.                 float[] clipData = new float[length];
53.                 audioSource.clip.GetData(clipData, 0);
54.  
55.                 //create a larger vector that will have enough space to hold our temporary
56.                 //recording, and the last section of the current recording
57.                 float[] fullClip = new float[clipData.Length + tempRecording.Count];
58.                 for (int i = 0; i < fullClip.Length; i++)
59.                 {
60.                     //write data all recorded data to fullCLip vector
61.                     if (i < tempRecording.Count)
62.                         fullClip[i] = tempRecording[i];
63.                     else
64.                         fullClip[i] = clipData[i - tempRecording.Count];
65.                 }
66.                
67.                 recordedClips.Add(fullClip);
68.                 audioSource.clip = AudioClip.Create("recorded samples", fullClip.Length, 1, 44100, false);
69.                 audioSource.clip.SetData(fullClip, 0);
70.                 audioSource.loop = true;    
71.  
72.             }
73.             else
74.             {
75.                 //stop audio playback and start new recording...
76.                 audioSource.Stop();
77.                 tempRecording.Clear();
78.                 Microphone.End(null);
79.                 audioSource.clip = Microphone.Start(null, true, 1, 44100);
80.                 Invoke("ResizeRecording", 1);
81.             }
82.  
83.         }
84.  
85.         //use number keys to switch between recorded clips, start from 1!!
86.         for (int i = 0; i < 10; i++)
87.         {
88.             if (Input.GetKeyDown("" + i))
89.             {
90.                 SwitchClips(i-1);
91.             }
92.         }
93.  
94.     }
95.  
96.     //chooose which clip to play based on number key..
97.     void SwitchClips(int index)
98.     {
99.         if (index < recordedClips.Count)
100.         {
101.             audioSource.Stop();
102.             int length = recordedClips[index].Length;
103.             audioSource.clip = AudioClip.Create("recorded samples", length, 1, 44100, false);
104.             audioSource.clip.SetData(recordedClips[index], 0);
105.             audioSource.loop = true;
106.             audioSource.Play();
107.         }
108.     }
109.  
110.  
111. }

 

ok this is off topic but what would be the way to convert this to something that could be send across a network. So say you wanted to have live chat in a multiplayer game.

 

Good question. Maybe this might help?

 

where does this save the recording?

 

not work

 

Not working at all.

 

@rorywalsh: its working bro.Thanks for the code

 

Hi @jbsenthilkumar209 , I put the code on my GameObject with an AudioSource. The space bar is working and I have an audio clip but... The audio clip is empty (cf. screenshots).
My microphone is working on Windows (I am using the built-in Realtek audio device of the motherboard).
How did you succeed to use this script ? Thanks a lot in advance !

(@rorywalsh)

 

Oups, sory, EDIT --> This is working but the sound is very irregular and interspersed with silences , Any ideas ?!

 

Damn ..... no human in this earth can record sound from microphone in unity>>?? man ......