Load sounds at runtime

Hi,

is there a way to load any sound at runtime, e.g. using an command line argument with the path to a certain audio file? It wouldn't be a problem to be forced to put the sounds into a certain folder but as far as I see it's not possible to use the resources-folder which doesn't exist as a folder after building.

Thanks

 

http://docs.unity3d.com/ScriptReference/WWW.html

 

Using the Resource folder after a build still works.

Code (CSharp):

1. public AudioClip music;
2.  
3. void Start(){
4. //Load the sound
5. music = (AudioClip) Resources.Load("Music");
6. //Play the sound
7. GameObject m = new GameObject("Music");
8. m.AddComponent<AudioSource>();
9. m.GetComponent<AudioSource>().clip = music;
10. m.GetComponent<AudioSource>().Play();
11. }

 

Indeed, loading files from Resource-folder works but you're not able to put new files in it.

 

I guess the only way would be by putting all the files you need into the Resources folder prior to making a build.

 

Since Unity 5, you can use
AudioClip.LoadAudioData();

More info here here

 

Thank you for you reply but I've got the WWW-solution working yesterday.
For anyone who is interested in, here's the code:

Code (CSharp):

1.           WWW audioLoader = new WWW(text);
2.           while (!audioLoader.isDone)
3.                     System.Threading.Thread.Sleep(100);
4.  
5.           sound =audioLoader.GetAudioClip(true, false);
6.  
7.           int counter = 0;
8.           while (sound == null){
9.                     //do not load longer than 5seconds
10.                     if (counter++ > 50)
11.                               break;
12.                     else
13.                               System.Threading.Thread.Sleep(100);
14.                         }
15.  
16.           sound = audioLoader.audioClip;

Sincerely

 

past this code in your project..

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5. using UnityEngine.Networking;
6. using System.IO;
7.  
8. public class PlayList : MonoBehaviour {
9.  
10.     string path;
11.     public List<AudioClip> Cliplist;
12.     AudioClip[] clips;
13.  
14.     public List<string> audioname;
15.  
16.     void Start ()
17.     {
18.         path = Application.persistentDataPath;
19.        
20.      
21.         if (Directory.Exists(path))
22.         {
23.             DirectoryInfo info = new DirectoryInfo(path);
24.          
25.             foreach (FileInfo item in info.GetFiles("*.wav"))
26.             {
27.              
28.                 audioname.Add(item.Name);
29.             }
30.          
31.         }
32.         StartCoroutine(LoadAudioFile());
33.     }
34.  
35.     IEnumerator LoadAudioFile()
36.     {
37.         for (int i = 0; i <audioname.Count; i++)
38.         {
39.             UnityWebRequest AudioFiles = UnityWebRequestMultimedia.GetAudioClip(path + string.Format("{0}", audioname[i]),AudioType.WAV);
40.             yield return AudioFiles.SendWebRequest();
41.             if(AudioFiles.isNetworkError)
42.             {
43.                 Debug.Log(AudioFiles.error);
44.                 Debug.Log(path + string.Format("{0}", audioname[i]));
45.             }
46.             else
47.             {
48.                 AudioClip clip = DownloadHandlerAudioClip.GetContent(AudioFiles);
49.                 clip.name = audioname[i];
50.                 Cliplist.Add(clip);
51.                 Debug.Log(path + string.Format("{0}", audioname[i]));
52.             }
53.         }
54.      
55.     }
56. }
57.  
58.  

 

For those looking for a solution using async/await and potentially needing to first fetch the file and then play here, I posted an example generating an audio file using text to speech and then loading it into a clip to play it.

Also, you can store the downloaded/generated file in `Application.dataPath` to easily get it back (the asset folder).

Script: Unity script to generate and load an audio clip using Azure Cognitive Services (github.com)
Full project (see readme): mattetti/UnityAzureSpeechSynthesis: Quick demo showing how to use Azure Speech Synthesis (tts) from Unity and loading/playing the generated file in game. (github.com)

The short version is that you can use an async function such as:

Code (CSharp):

1.  public async Task<AudioClip> GetAudioClip(string filePath, AudioType fileType)
2.     {
3.  
4.         using (UnityWebRequest www = UnityWebRequestMultimedia.GetAudioClip(filePath, fileType))
5.         {
6.             var result = www.SendWebRequest();
7.  
8.             while (!result.isDone) { await Task.Delay(100); }
9.  
10.             if (www.result == UnityWebRequest.Result.ConnectionError)
11.             {
12.                 Debug.Log(www.error);
13.                 return null;
14.             }
15.             else
16.             {
17.                 return DownloadHandlerAudioClip.GetContent(www);
18.             }
19.         }
20.     }

And call it to populate a predefined audio clip (or a new variable):

Code (CSharp):

1. _audioClip = await GetAudioClip(outputPath, AudioType.WAV);

The clip can then be played via an AudioSource instance.

Note that this approach works for remote files as well as local files.