|
|
@@ -9,10 +9,10 @@ config.bufferSize = 16 |
|
|
|
phase = 0 |
|
|
|
function process(block) |
|
|
|
-- Knob ranges from -5 to 5 octaves |
|
|
|
pitch = block.knobs[0] * 10 - 5 |
|
|
|
pitch = block.knobs[1] * 10 - 5 |
|
|
|
-- Input follows 1V/oct standard |
|
|
|
-- Take the first input's first buffer value |
|
|
|
pitch = pitch + block.inputs[0][0] |
|
|
|
pitch = pitch + block.inputs[1][1] |
|
|
|
|
|
|
|
-- The relationship between 1V/oct pitch and frequency is `freq = 2^pitch`. |
|
|
|
-- Default frequency is middle C (C4) in Hz. |
|
|
@@ -22,13 +22,13 @@ function process(block) |
|
|
|
|
|
|
|
-- Set all samples in output buffer |
|
|
|
deltaPhase = config.frameDivider * block.sampleTime * freq |
|
|
|
for i=0,block.bufferSize-1 do |
|
|
|
for i=1,block.bufferSize do |
|
|
|
-- Accumulate phase |
|
|
|
phase = phase + deltaPhase |
|
|
|
-- Wrap phase around range [0, 1] |
|
|
|
phase = phase % 1 |
|
|
|
|
|
|
|
-- Convert phase to sine output |
|
|
|
block.outputs[0][i] = math.sin(2 * math.pi * phase) * 5 |
|
|
|
block.outputs[1][i] = math.sin(2 * math.pi * phase) * 5 |
|
|
|
end |
|
|
|
end |