New Audio Engine: Early Access Quick-Start Guide

[echolevel]

The Start node is only for activation of the Modular Synth if the "Auto Activate" option in the Details pane has been unticked. I think it's ticked by default when you add a Modular Synth to your Blueprint, so using a Start node will have no effect.

Try setting your Synth Preset on BeginPlay (or some other game environment-driven event), deleting the Start, then hooking up your keypress event to the NoteOn.

If you want the frequency of the tone changed *directly* by a variable, you might try mapping that variable to pitchbend. What you're doing here isn't starting the synth with Osc 1's frequency set to 2000Hz; NoteOn sets the oscillator's base frequency by converting the incoming MIDI note to Hz, then preset or modulator data is factored in to account for semitone/octave/LFO adjustment. SetOscFrequencyMod is intended for FM synthesis, and while I haven't tried this out yet, I think it needs to work in conjunction with another modulation source whereas this just sets the modulation scale factor.

Also bear in mind that while oscillators in the preset structure are numbered from 1, I *think* that you have to count them from 0 when addressing them in relevant BP nodes. Don't quote me on that, though!

[PepperTheSgt]

Hi, I have a question about working with the modular synth. If there's a better place to ask it, please direct me.

My first issue is that I don't seem to understand how the "Start" node works. The description says "starts the synth generating audio," but in my blueprint it doesn't seem to be doing anything. The only way I can get the synth to make sound is if I use the "Note On" node, which I think I'd rather not do.

The second issue, probably stemming from the first, is that I can't get the "Set Osc Frequency Mod" node to affect the sound. I assume this is related to the fact that so far I can only hear audio when a specific MIDI note is being played. Ultimately, my goal is to use the to have the frequency of the tone change based on a variable.

I assumed that "starting" the synth with the Osc Frequency set to 2000 would generate a 2000Hz tone until I told it to stop, but clearly I'm not getting something. I don't have much experience with modular synthesizers, so maybe that ignorance is showing

In my Blueprint, the Set Osc Frequency Mod Node is based on a tick event and the Set Synth Preset (and thus Start) is set to a button press event. Note On works if I connect it to Start.

Thanks!

[Onarbest]

Maybe use a highpass-filter? If you need to hear the rest of the sound too, duplicate the sound but change it to a fitting low-pass filter so they together sound good. If you're using it with envelope follower it can cause complications though, because we don't have dummy-channels yet(I think), so the env foll can only react to stuff that player hears. So the split would be necessary depending on your case.

Thanks alot for the quick reply, gonna try that asap!

[ArthurBarthur]

Is there a way to get the frequency of a certain spectrum range on tick ? Want to be able to pick out the brilliance from the sound.

Maybe use a highpass-filter? If you need to hear the rest of the sound too, duplicate the sound but change it to a fitting low-pass filter so they together sound good. If you're using it with envelope follower it can cause complications though, because we don't have dummy-channels yet(I think), so the env foll can only react to stuff that player hears. So the split would be necessary depending on your case.

[Onarbest]

Is there a way to get the frequency of a certain spectrum range on tick ? Want to be able to pick out the brilliance from the sound.

[vvlay9090]

vvlay9090, good question, you can open the project using a command prompt OR if you are using the Github version, you can enter the command line into your visual studio project build to ensure that it loads the Audio Mixer module.

You can learn more about command prompts here:
https://docs.unrealengine.com/latest...LineArguments/

Thanks Dan. Gocha..

[dan.reynolds]

hi, Dan.
you made a super good things for us.
I have a simple question...
How to do this step '1. Open the project using command line flag: -audiomixer' ...

vvlay9090, good question, you can open the project using a command prompt OR if you are using the Github version, you can enter the command line into your visual studio project build to ensure that it loads the Audio Mixer module.

You can learn more about command prompts here:
https://docs.unrealengine.com/latest...LineArguments/

[vvlay9090]

hi, Dan.
you made a super good things for us.
I have a simple question...
How to do this step '1. Open the project using command line flag: -audiomixer' ...

[EidurArnason]

Thanks kjekkbart... Good to know... I copied some objects from the other... gonna rather rebuild the second one, see how it goes.

[ArthurBarthur]

You can have many, everywhere!
Just tried with a couple actors and a pawn, each playing a note on their own synth. Works great!
Maybe it's in your preset-setup or somewhere else?

[EidurArnason]

When I make one Pawn and one Actor who each have their own Modular Synth, and try and run it Unreal crashes.

I am using the same preset bank for both though.

Am I not able to build more than one instance of a Modular synth?

If so, is there a good way for many actors to have their own preset playing from one Modular Synth simultaneously ?

Thanks.

[SVR33]

[MENTION=21219]SVR33[/MENTION]

Yup, we used the Envelope Follower to drive Instanced Material Parameters to create a reactive affect.

I got it working! I'm really psyched. Thanks!

[dan.reynolds]

[MENTION=21219]SVR33[/MENTION]

Yup, we used the Envelope Follower to drive Instanced Material Parameters to create a reactive effect.

[SVR33]

Not Dan here. Do you have the spoken dialogue ready as audio file, or do you need it to be reacting to the users voice, live? If it's audio files you can do it in blueprints Set up the 'Envelope Follower' source effect thing. Instructions are in the first or second post of this thread.
Live voice is trickier(for now...dun-dun-duuun), but if you are cool with c++ you can do it.

Have fun!

Oh, that's perfect! Yes, I'm using audio files and, somehow, just completely missed this. Thanks so much!

[ArthurBarthur]

Not Dan here. Do you have the spoken dialogue ready as audio file, or do you need it to be reacting to the users voice, live? If it's audio files you can do it in blueprints Set up the 'Envelope Follower' source effect thing. Instructions are in the first or second post of this thread.
Live voice is trickier(for now...dun-dun-duuun), but if you are cool with c++ you can do it.

Have fun!