Convert .WAV file in-memory to byte Array [C#]

Question

Convert .WAV file in-memory to byte Array [C#]

Adrian 1

Hi,

I have seen documentation to convert a .WAV file to a byte array using File.ReadAllBytes(//filePath).

I have a .WAV file saved to a variable in my program which is microphone input from the user. I would like to avoid I/O operations if a solution to convert a variable in memory into a byte array is possible.

Thank you for your time.

AgaveJoe 30,126 Reputation points

2022-12-20T14:43:05.11+00:00

What is saved in memory? The file path?

Is there any way you can share your code so we can see what you're doing?

Adrian 1

// userAudioClip is a reference to a .WAV file provided by another class, which has been recorded from the user's microphone
// so it is not saved to disk. It is not a file path. I want to take the data from this variable and put it into a byte array.
// It is of type AudioClip, which is a class within Unity that is a container for audio clips

private AudioClip userAudioClip;  
  
  
  
IEnumerator Upload()  
    {  
        WWWForm form = new WWWForm();  
  
        //.WAV to byte array conversion would happen here  
  
        form.AddBinaryData("file", /*userAudioClipByteArray*/);  
  
        using (UnityWebRequest www = UnityWebRequest.Post("/*server URI*/", form))  
        {  
            yield return www.SendWebRequest();  
  
            if (www.result != UnityWebRequest.Result.Success)  
            {  
                Debug.Log(www.error);  
            }  
            else  
            {  
                Debug.Log("Form upload complete!");  
            }  
        }  
    }

Viorel 122.6K Reputation points

2022-12-20T15:36:41.873+00:00

Show some details about the AudioClip type. Is it made by you?
Adrian 1 Reputation point

2022-12-20T15:42:26.717+00:00

No, AudioClip is not made by me. It is a class available through the UnityEngine namespace.

https://docs.unity3d.com/ScriptReference/AudioClip.html
AgaveJoe 30,126 Reputation points

2022-12-20T16:34:29.927+00:00

According to the Unity documentation, if you've recorded the sound then you already have a byte array. It is important to mention that a .WAV file in memory is already a byte array too. I think there is something else going on that you have not explained clearly. Are you receiving an error?

Also, this is not a Unity support forum. If you need Unity support then a Unity forum is a better place to get help.
Adrian 1 Reputation point

2022-12-20T17:10:22.8+00:00

Yes, I guess you are right. Apologies for wasting your time.

I guess the crux of my problem is that I need to force cast this AudioClip variable into a byte array. Otherwise I cannot add the data to my POST request. But as you said, dealing with unity specific issues, i.e. AudioClip containers, is beyond the scope of this forum.
Jack J Jun 25,296 Reputation points

2022-12-21T08:27:34.297+00:00

@Adrian , Welcome to Microsoft Q&A, as other suggested, I recommend that you could ask the question in Unity Forum.

Thanks for your understanding.

Your answer

AgaveJoe 30,126 Reputation points

2022-12-20T14:43:05.11+00:00

What is saved in memory? The file path?

Is there any way you can share your code so we can see what you're doing?
Adrian 1 Reputation point

2022-12-20T15:01:32.733+00:00

// userAudioClip is a reference to a .WAV file provided by another class, which has been recorded from the user's microphone
// so it is not saved to disk. It is not a file path. I want to take the data from this variable and put it into a byte array.
// It is of type AudioClip, which is a class within Unity that is a container for audio clips

private AudioClip userAudioClip; IEnumerator Upload() { WWWForm form = new WWWForm(); //.WAV to byte array conversion would happen here form.AddBinaryData("file", /*userAudioClipByteArray*/); using (UnityWebRequest www = UnityWebRequest.Post("/*server URI*/", form)) { yield return www.SendWebRequest(); if (www.result != UnityWebRequest.Result.Success) { Debug.Log(www.error); } else { Debug.Log("Form upload complete!"); } } }
Viorel 122.6K Reputation points

2022-12-20T15:36:41.873+00:00

Show some details about the AudioClip type. Is it made by you?
Adrian 1 Reputation point

2022-12-20T15:42:26.717+00:00

No, AudioClip is not made by me. It is a class available through the UnityEngine namespace.

https://docs.unity3d.com/ScriptReference/AudioClip.html
AgaveJoe 30,126 Reputation points

2022-12-20T16:34:29.927+00:00

According to the Unity documentation, if you've recorded the sound then you already have a byte array. It is important to mention that a .WAV file in memory is already a byte array too. I think there is something else going on that you have not explained clearly. Are you receiving an error?

Also, this is not a Unity support forum. If you need Unity support then a Unity forum is a better place to get help.
Adrian 1 Reputation point

2022-12-20T17:10:22.8+00:00

Yes, I guess you are right. Apologies for wasting your time.

I guess the crux of my problem is that I need to force cast this AudioClip variable into a byte array. Otherwise I cannot add the data to my POST request. But as you said, dealing with unity specific issues, i.e. AudioClip containers, is beyond the scope of this forum.
Jack J Jun 25,296 Reputation points

2022-12-21T08:27:34.297+00:00

@Adrian , Welcome to Microsoft Q&A, as other suggested, I recommend that you could ask the question in Unity Forum.

Thanks for your understanding.

Share via

Convert .WAV file in-memory to byte Array [C#]

Your answer