AudioListener

AudioListener records an audio stream from its surrounding AudioEmitters in the 3D world. It provides a single Output pin which can be connected to other pins via Wires. If the parent is an Attachment, Camera, or PVInstance, the parent's world CFrame will be used for listening. If the parent is not one of these classes, the AudioListener effectively hears nothing.

local listener = Instance.new("AudioListener")
local output = Instance.new("AudioDeviceOutput")
local wire = Instance.new("Wire")

listener.Parent = workspace.Camera
wire.Parent = listener
output.Parent = wire

wire.SourceInstance = listener
wire.TargetInstance = output