Audio waveform display

beginners
#1

Hello! i’ve heard great things about OF and its community and figured its time to finally jump in after tip toeing around the idea of using openframeworks for a few months.

my first project i’d like to start is to create a drag and drop sound player with a simple control ui and display the audio’s waveform once a sound has loaded (and a playback position marker that follows as the audio plays back)

i’ve had a look around on forums and stuff but cant seem to find too much about the waveform display…

(plus i figured this would be a great way to get more involved in the community!)

thanks!

#2

Have a look at examples/sound/soundBufferExample

I have done something similar, for a tool I wrote that does stuff with samples.

I load the audio data into an ofSoundBuffer, then make an ofMesh with OF_PRIMITIVE_LINE_STRIP and add a vertex for every n’th audio sample. For stereo you have two meshes

I use ImGui for the UI but the ofxGui that comes in oF/addons is fine as well.

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