Check the sound file format

Oct 13, 2025 by magicalceylontours.com 89 views

UE5+ Audio Bug: High Pitched and Stuttery Audio using Reflections

As a developer working with Unreal Engine 5, you may encounter various audio-related issues. One such problem is the occurrence of high-pitched and stuttery audio when using reflections with certain audio formats. In this article, we will delve into the details of this bug, provide a step-by-step guide to reproduce the issue, and explore possible solutions.

The audio breaking bug seems to consistently occur when using the Set Sound function on an Audio Component, followed by playing a specific sound file. The issue is not limited to a particular Unreal Engine version, as it has been observed in both 5.5.4 and 5.3.2. The operating system in use is Windows 10 version 22H2, and the CPU architecture is AMD64.

To reproduce the issue, follow these steps:

Create a Blueprint (BP1) with an Audio Component using Steam Audio settings:
- Create a new Blueprint class (BP1) and add an Audio Component to it.
- Configure the Audio Component to use Steam Audio settings.
Create another Blueprint (BP2) that plays an Audio Component using Steam Audio settings:
- Create another new Blueprint class (BP2) and add an Audio Component to it.
- Configure the Audio Component to use Steam Audio settings.
Make BP1 set BP2's sound, and play it, using a looping timer with interval:
- In BP1, create a variable to store the sound played by BP2.
- Use a looping timer to set the sound played by BP2 at regular intervals.
Make BP1 play the sound file provided here at the same time as BP2's sound given by BP1:
- In BP1, play the sound file provided in the attachment (marco_sound.zip) simultaneously with the sound played by BP2.
Play and listen to the audible marco play normally, then become high pitched randomly, and making audio stutter:
- Play the Blueprints and listen to the audio. The sound should play normally at first, but then suddenly become high-pitched and stuttery.

A minimal project example that demonstrates this issue is available for download:

https://drive.google.com/file/d/1zf0t4c__Vj1T8KREz-VxuyMRoGhMdTF-/view?usp=sharing

Based on the provided information, it appears that the issue may be related to the format of the sound file being used. However, the documentation does not specify any specific requirements for the sound file format.

Possible Causes:

Sound file format: The sound file format may be causing the issue. It is possible that the format is not compatible with the Audio Component or the Steam Audio settings.
Audio Component settings: The Audio Component settings may be causing the issue. It is possible that the settings are not configured correctly or are not compatible with the sound file format.

Possible Solutions:

Check the sound file format: Verify that the sound file format is compatible with the Audio Component and the Steam Audio settings.
Adjust Audio Component settings: Adjust the Audio Component settings to ensure they are compatible with the sound file format.
Use a different sound file: Try using a different sound file to see if the issue persists.

The UE5+ audio bug causing high-pitched and stuttery audio using reflections is a complex issue that requires further investigation. By following the steps outlined in this article, developers can reproduce the issue and explore possible causes and solutions. If you are experiencing this issue, try checking the sound file format, adjusting the Audio Component settings, or using a different sound file to resolve the problem.
UE5+ Audio Bug: High Pitched and Stuttery Audio using Reflections - Q&A

In our previous article, we explored the issue of high-pitched and stuttery audio using reflections in Unreal Engine 5. We provided a step-by-step guide to reproduce the issue and discussed possible causes and solutions. In this article, we will answer some frequently asked questions related to this issue.

A: The exact cause of this issue is still unknown, but it is believed to be related to the format of the sound file being used. It is possible that the format is not compatible with the Audio Component or the Steam Audio settings.

A: To reproduce this issue, follow the steps outlined in our previous article:

Create a Blueprint (BP1) with an Audio Component using Steam Audio settings.
Create another Blueprint (BP2) that plays an Audio Component using Steam Audio settings.
Make BP1 set BP2's sound, and play it, using a looping timer with interval.
Make BP1 play the sound file provided here at the same time as BP2's sound given by BP1.
Play and listen to the audible marco play normally, then become high pitched randomly, and making audio stutter.

A: This issue has been observed on Windows 10 version 22H2 with AMD64 CPU architecture. It is possible that the issue may occur on other systems as well.

A: Yes, you can try using a different sound file to see if the issue persists. If the issue is resolved, it may indicate that the original sound file is the cause of the problem.

A: To adjust the Audio Component settings, follow these steps:

Open the Audio Component settings.
Check the "Format" setting to ensure it is compatible with the sound file.
Adjust the "Sample Rate" and "Bit Depth" settings to ensure they are compatible with the sound file.
Save the changes and test the Audio Component.

A: Yes, you can try using a different audio engine to see if the issue persists. If the issue is resolved, it may indicate that the Steam Audio engine is the cause of the problem.

A: To report this issue to Epic Games, follow these steps:

Go to the Epic Games website and log in to your account.
Click on the "Support" tab and select "Report an Issue".
Fill out the issue report form with as much detail as possible.
Attach any relevant files or screenshots to the report.
Submit the report and wait for a response from Epic Games.