AudioEmitter

Represents a volume-over-angle curve that affects how loudly a AudioListener will hear the AudioEmitter, based on the angle between them and the LookVector associated with the AudioEmitter.

This property is internal and can't be accessed by scripts; it exists to support replication. See SetAngleAttenuation() for usage details.

If an AudioEmitter and an AudioListener share an interaction group, then the listener is capable of hearing the emitter.

Represents a volume-over-distance curve that affects how loudly a AudioListener will hear the AudioEmitter, based on the distance between them.

This property is internal and can't be accessed by scripts; it exists to support replication. See SetDistanceAttenuation() for usage details.

Returns a table mapping angle to volume. Keys are numbers between 0 and 180 (inclusive), while values are numbers between 0 and 1 (inclusive) describing how volume attenuates depending on direction. This method returns an empty table if the default angle attenuation curve is being used.

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Returns an array of Wires that are connected to the specified pin. AudioEmitter has one "Input" pin.

Parameter

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Returns a table mapping distance to volume. Keys are numbers greater than or equal to 0, while values are numbers between 0 and 1 (inclusive) describing how volume attenuates over distance. This method returns an empty table if the default distance attenuation curve is being used.

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Sets a volume-over-angle curve that affects how loudly a AudioListener will hear the AudioEmitter, based on the angle between them and the LookVector associated with the AudioEmitter.

The curve is represented by a table mapping angle keys to volume values. Keys are expected to be unique numbers between 0 and 180 (inclusive), while values are expected to be numbers between 0 and 1 (inclusive). Tables containing up to 400 key-value pairs are supported.

The volume of the AudioEmitter from the perspective of a AudioListener at an angle a is determined by linearly interpolating between the volume levels for the points on the curve whose angle values are directly above and below a. If there is either no point below a or no point above a, the volume level of the other point is chosen. Essentially, the curve is a sequence of points connected by straight lines, and beyond its left and right endpoints the curve extends outward at their respective volume levels.

This volume will be multiplied with the volumes from all other attenuation curves (including the ones on the receiving AudioListener) to obtain the final audibility.

If the table is empty or nil, the AudioEmitter defaults to using an angle attenuation curve with the constant volume value of 1.

Parameter

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Sets a volume-over-distance curve that affects how loudly a AudioListener will hear the AudioEmitter, based on the distance between them.

The curve is represented by a table mapping distance keys to volume values. Keys are expected to be unique numbers greater than or equal to 0, while values are expected to be numbers between 0 and 1 (inclusive). Tables containing up to 400 key-value pairs are supported.

The volume of the AudioEmitter from the perspective of a AudioListener at a distance d is determined by linearly interpolating between the volume levels for the points on the curve whose distance values are directly above and below d. If there is either no point below d or no point above d, the volume level of the other point is chosen. Essentially, the curve is a sequence of points connected by straight lines, and beyond its left and right endpoints the curve extends outward infinitely at their respective volume levels.

This volume will be multiplied with the volumes from all other attenuation curves (including the ones on the receiving AudioListener) to obtain the final audibility.

If the table is empty or nil, the AudioEmitter defaults to using a distance attenuation curve determined by the inverse-square law.

Parameter

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local Players = game:GetService("Players")

local emitterPart = Instance.new("Part")
emitterPart.Anchored = true
emitterPart.Position = Vector3.new(0, 0, 0)
emitterPart.Parent = workspace

local emitter : AudioEmitter = Instance.new("AudioEmitter")
emitter.Parent = emitterPart

local curve = {}
curve[10] = 1  -- Within a distance of 10 studs, listeners hear this emitter at full volume
curve[100] = 0.4  -- At a distance of 100 studs, listeners hear this emitter at 40% volume
curve[300] = 0  -- At any distance farther than 300 studs, listeners cannot hear this emitter
emitter:SetDistanceAttenuation(curve)

-- Replicate the rolloff curve from the old voice implementation
-- Default voice without the new audio API uses quadratic rolloff ranging from 7 to 80 studs
local MIN_DISTANCE = 7
local MAX_DISTANCE = 80
local CURVE_STEP_SIZE = 2

local voiceCurve = {}
for i = MIN_DISTANCE, MAX_DISTANCE, CURVE_STEP_SIZE do
	voiceCurve[i] = ((i - MIN_DISTANCE) - (MAX_DISTANCE - MIN_DISTANCE))^2 / (MAX_DISTANCE - MIN_DISTANCE)^2
end
voiceCurve[MAX_DISTANCE] = 0

local function setVoiceCurve(character)
	local voiceEmitter : AudioEmitter = character:WaitForChild("AudioEmitter")
	voiceEmitter:SetDistanceAttenuation(voiceCurve)
end

for _, player in Players:GetPlayers() do
	if player.Character then
		setVoiceCurve(player.Character)
	end
	player.CharacterAdded:Connect(setVoiceCurve)
end

Parameter