Bug(?) in Magic Leap Soundfield package

Unity Development
1

Hi,

I have been building a new version of my HoloATC app, and I noticed Spatial Sound not working properly. Usually it does not work at all (you don’t hear any sound), or it suddenly starts working after a while. Using my Unity File Logger service I discovered an error pointing to the SoundField package, so I started downgrading the package until it worked again, and found the issue starts here:

image
image762×543 41.8 KB

The log file of the not-working package just said this:

Time: 2025-03-01 10:46:04.794
Log: Exception
Msg: NullReferenceException: Object reference not set to an instance of an object.
StackTrace: MagicLeap.Soundfield.EventDispatcher:Update()

The log file of the older packages - that still produce Spatial Sound:

Time: 2025-03-01 10:46:04.794
Log: Exception
Msg: NullReferenceException: Object reference not set to an instance of an object.
StackTrace: MagicLeap.Soundfield.EventDispatcher:Update()

=====

Time: 2025-03-01 10:46:04.802
Log: Warning
Msg: [MSA - Warning] No MLListener found, creating a temporary runtime instance with default settings. in function: CreateMLListenerInstance
StackTrace: UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
MagicLeap.Soundfield.MLListener:CreateMLListenerInstance()
MagicLeap.Soundfield.MLListener:CheckCreateInstance()
MagicLeap.Soundfield.d__3:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
MagicLeap.Soundfield.EventDispatcher:Update()

=====

Time: 2025-03-01 10:46:04.809
Log: Log
Msg: [MSA] SDK/ZI audio is enabled, Audio will be routed through SDK/ZI

Am I doing something wrong, or is this a bug?

Using:

  • Unity 6000.0.35f1
  • OS 1.12.0
  • SDK 2.6.0
  • ML MRTK 1.4.0
  • Developing on Windows
3

Hey @localjoost

I used the Magic Leap Examples Project and imported the latest Unity Soundfield Audio package.

I used the demo scene that comes with the package to see if I encountered the same error as you.

I can report that I did not encounter this error or any similar logs, so it does not seem like a bug to me as of right now.

One thing you could try is taking a look at the demo scene that comes with the Magic Leap SoundField Audio package and ensuring you are using the package and it’s components similarly in your own project.

Let me know if you have any more details or questions!

Best,
Corey