Help please, Recording mode, earpiece mode and not speaker mode

Hello Devs,
I am looking for a way to set the microphone for android / IOS devices,
so that the recording wont be In a speaker mode.
I am making an app which uses the Microphone and I need to set the exposure for noise to the bear minimum.
However when I use Microphone.Start() function the microphone starts in "Speaker Mode" which adds a lot of un wanted extra noise to the recording. ( I tested it on android device ).

Is there a way to switch from speaker mode to "earpieace mode" or something like that?

Thanks a lot.

 

Hello,
I did a lot of digging and found out a solution using android ndk however when I try to invoke the android functions it does not do anything, I use the following code:

Code (CSharp):

1. #if UNITY_ANDROID
2.         try
3.         {
4.            
5.             AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
6.             AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
7.             AndroidJavaObject audioManager = activity.Call<AndroidJavaObject>("getSystemService", "audio");
8.             bool resBef = audioManager.Call<Boolean>("isSpeakerphoneOn");
9.             audioManager.Call("setSpeakerphoneOn", true);
10.             audioManager.Call("setMode", 2);
11.             bool res = audioManager.Call<Boolean>("isSpeakerphoneOn");
12.             int mode2 = audioManager.Call<Int32>("getMode");
13.            
14.             txtMicCaps.text +=  " " + resBef + " " + res + " " + mode2;
15.         }
16.         catch (Exception ex)
17.         {
18.             txtException.text = ex.ToString();
19.         }
20. #endif

I tested the above code on my samsung galaxy, I am setting setSpeakerphoneOn to true, setMode 2 (IN_CALL_MODE).

After that I check if my changes applied but I get the following values:

resBef: false
res: false
mode2: 0


which mean my changes did not take place, anyone have an idea why?

 

SOLVED!

As part of my research on this question, I have seen many unanswered threads for the same question so to save some hours of searching, Here is a step by step Instructions to make the microphone and earpiece work as if you are speaking on the phone, on regular mode ( Not speaker Mode )
The Solution Works only for android devices, IOS devices probably would need a plugin to make it work.

1. Add permissions to the AndroidManifest.xml file: Create a folder in your unity project "Assets/Plugins/Android"
2. Copy unity's default Android Manifest File into the above folder - you can find the default manifest file under: "<Unity_Installed_Folder>\Editor\Data\PlaybackEngines\AndroidPlayer\Apk"
3. Edit the cloned AndroidManifest.xml and add the following line: <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
4. Use the code below to set toggle between modes.

Toggle Mode between Communication (3) Mode To Normal Mode (0): (Need to set to communication mode (3) in our use case)

Code (CSharp):

1. public void ToggleMode()
2.     {
3. #if UNITY_ANDROID
4.         try
5.         {
6.             AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
7.             AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
8.             AndroidJavaObject audioManager = activity.Call<AndroidJavaObject>("getSystemService", "audio");
9.             int mode2 = audioManager.Call<Int32>("getMode");
10.             if(mode2 == 3)
11.             {
12.                 mode2 = 0;
13.             }
14.             else
15.             {
16.                 mode2 = 3;
17.             }
18.  
19.             audioManager.Call("setMode", mode2);
20.             mode2 = audioManager.Call<Int32>("getMode");
21.  
22.             Debug.Log("Mode is now set to: " + mode2);
23.         }
24.         catch (Exception ex)
25.         {
26.              Debug.Log(ex.toString());
27.         }
28. #endif
29.     }

Toggle Speakers: (Need to set to false for our use case)

Code (CSharp):

1.     public void ToggleSpeakerMode()
2.     {
3. #if UNITY_ANDROID
4.         try
5.         {
6.             AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
7.             AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
8.             AndroidJavaObject audioManager = activity.Call<AndroidJavaObject>("getSystemService", "audio");
9.             bool isSpeakers = audioManager.Call<Boolean>("isSpeakerphoneOn");
10.             audioManager.Call("setSpeakerphoneOn", !isSpeakers);
11.             bool res = audioManager.Call<Boolean>("isSpeakerphoneOn");
12.          
13.             Debug.Log("Speakers are now set to: " + res);
14.         }
15.         catch (Exception ex)
16.         {
17.             Debug.Log(ex.toString());
18.         }
19. #endif
20.     }