From a334a44a2e44f71ab9568fa8385f4e0878234e89 Mon Sep 17 00:00:00 2001
From: Spencer Russell <spencer.f.russell@gmail.com>
Date: Mon, 23 Jun 2014 19:17:28 -0400
Subject: [PATCH] adds WhiteNoise AudioNode

---
 src/nodes.jl | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/nodes.jl b/src/nodes.jl
index d2158de..549b3d1 100644
--- a/src/nodes.jl
+++ b/src/nodes.jl
@@ -150,6 +150,18 @@ function play{T <: Unsigned}(arr::Array{T}, args...)
     play(arr, args...)
 end
 
+#### Noise ####
+
+type WhiteNoiseRenderer <: AudioRenderer end
+typealias WhiteNoise AudioNode{WhiteNoiseRenderer}
+WhiteNoise() = WhiteNoise(WhiteNoiseRenderer())
+export WhiteNoise
+
+function render(node::WhiteNoiseRenderer, device_input::AudioBuf, info::DeviceInfo)
+    return rand(AudioSample, info.buf_size) .* 2 .- 1
+end
+
+
 #### AudioInput ####
 
 # Renders incoming audio input from the hardware