Synchronizing lights with sound (music)

[Nyxifier (nyxon)]

Hey! I’m trying to make a light show and firework display live event. It looks good so far, however, I’d like to properly synchronize it with the sound (music), so that the lights change how they really should and don’t depend on just wait or loop functions.

Any idea how I can easily do this? I never really worked with synchronizing stuff with sounds.

[descreetOP]

you need to match the light change to the song bpm

[Nyxifier (nyxon)]

Any idea why the light doesn’t do anything?

local runS = game:GetService("RunService")

local audio = game:GetService("SoundService"):WaitForChild("EventMusic")

local bpm = 140
local secPerBeat = 0
local songPosition = 0
local songPositionInBeats = 0
local firstBeatOffset = 0
local dspSongTime = 0

function Start()
	secPerBeat = 60.0 / bpm
	dspSongTime = audio.TimePosition

	audio:Play()
end

function Update()
	songPosition = audio.TimePosition - dspSongTime - firstBeatOffset
	songPositionInBeats = songPosition / secPerBeat

	script:SetAttribute("songPosition", songPosition)
	script:SetAttribute("songPositionInBeats", songPositionInBeats)
end

Start()
runS.Heartbeat:Connect(Update)

local runS = game:GetService("RunService")

local conductor = script.Parent.Conductor

local eventFireTime = 1
local eventFireTime2 = 2

runS.Heartbeat:Connect(function()
	if eventFireTime <= conductor:GetAttribute("songPositionInBeats") then
		local WashLightsModel = workspace:WaitForChild("WashLights")
		local Light = WashLightsModel:FindFirstChild("WashLight")
		Light.Head.Lens.Transparency = 0
		Light.Head.Lens.Beam1.Enabled = true
		Light.Head.Lens.SurfaceLight.Enabled = true
	end
	if eventFireTime2 <= conductor:GetAttribute("songPositionInBeats") then
		local WashLightsModel = workspace:WaitForChild("WashLights")
		local Light = WashLightsModel:FindFirstChild("WashLight")
		Light.Head.Lens.Transparency = 1
		Light.Head.Lens.Beam1.Enabled = false
		Light.Head.Lens.SurfaceLight.Enabled = false
	end
end)

[Blueshell_Dev (exportTypeBlueshell)]

I don’t know if you’re still interested, but luckily for you, a new feature called “PlaybackLoudness” came out, what I recommend doing is logging the last 10 frames of your sound into a table, you can do this by inserting the PlaybackLoudness value from your sound and then clearing the 1st index from your table once its length goes over 10.

PlaybackLoudness is a range from 0 - 1,000 so set the scale at:

local Scale = (PlaybackLoudness / 1_000)

and from there you are able to light up your lights with certain brightness levels, colors, etc!

Again this was almost 2 years ago so im confident you won’t be needing this, but this is for any future developers!

[Nyxifier (nyxon)]

Hey,

Yes, I indeed know about that feature and managed to properly synchronize events now, even in a more complex way than what I intended originally. So all good now, but thanks for the reply!