0
\$\begingroup\$

This project is done in Unreal Engine 5. I would prefer doing this in C++ instead of Blueprints, but I'm open to any ideas.

I am trying to take an audio file and create the data needed to make an audio waveform (sample image of audio waveform below).

enter image description here

I would like to go "frame by frame" (Sorry I don't know the audio equivalent to video) and try to find the information needed for this, such as the peaks and troughs of the audio file. For example:

frame 0: audio level 0
frame 1: audio level 1
frame 2: audio level 0
frame 3: audio level 2
frame 4: audio level 0

and using this data, a visual waveform can be created.

I have been looking at resources to get this but they all involve plugins that already do this, but I need to create this feature myself and I don't know where to start. If anyone has any sources or tips to get started that would be much appreciated, thank you.

\$\endgroup\$
3
  • \$\begingroup\$ The audio equivalent of a "frame" is usually called a "sample", leading to the "sample rate" which tells you how densely those samples are packed in each unit of time. \$\endgroup\$ Commented Feb 12, 2023 at 12:30
  • \$\begingroup\$ You only need to process peaks, the troughs are a mirror image about 0. \$\endgroup\$ Commented Feb 13, 2023 at 23:11
  • \$\begingroup\$ Efficiently rendering that number of lines real-time wold be a challenge. Consider using an fft to bin a window of the audio,EQ display, and render 5-10 rectangles instead of 1000s of lines. Depending on threading, fft or lines may be a toss up. \$\endgroup\$ Commented Feb 13, 2023 at 23:58

0

Reset to default

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.