Sound Modifier
Updated: 15 Sep 2026
Generates a modifier value based on the waveform of an audio source.
Sound Modifier
Method #
This node outputs a modifier value based on amplitude if of of an audio file or a live captured audio input. The audio is split into a series of frequency bands, and the modifier can be set to respond to the amplitude of a specific frequency band, or the amplitude of the whole waveform.
Each increasing band corresponds to a doubling of the band’s center frequency.
The output is a numeric value that can be further processed with other modifiers, or directly connected to a parameter in another node, using the operation method selected.
This node can receive sound from a Sound Capture or Sound Loader node.
Parameters
These properties control the core behaviours of the node.
Parameter Details Current Value
Shows the current value of the modifier. Cannot be directly changed.
Blend Amount
The amount to blend the input modifier’s value with its new value.
Sound
Sound file used for the modifier. This can be overwritten with the sound input pin.
Looping
Controls whether the sound loops across timeline loops or resets. Only functions if a sound is selected within this node and a sound source isn’t connected to the Sound input.
Operation
The operation to be performed on the targeted parameter.
- Add : Adds to the existing parameter value.
- Subtract : Subtracts from the existing parameter value.
- Multiply : Multiplies the existing parameter value.
- Replace : Replaces the existing parameter value.
Restore Values
Toggle whether the values restore to 0. If unchecked, generated values incrementally add to the modifier value.
Channel
Determines whether the modifier will respond to the left, right, or stereo channels of the incoming sound
Channel
Which audio channel is used.
- Stereo :
- Left :
- Right :
Frequency Band
Sets the Band EQ to a given band. Bands will double in frequency going upwards.
Time Offset
Offsets the time the value is modified from the time the waveform is played.
Change Threshold
Changes the threshold for what counts toward the modifier.
Attack
Controls the initial time between the current value to the peak.
Decay
Controls the time between the peak to the sustain level.
Min Value
Acts as a minimum threshold for extracting a range of values from the audio feed.
Max Value
Acts as a maximum threshold for extracting a range of values from the audio feed.
Max Clamp
Clamps the result.
Spikiness
You can use this property limit the rate of change of the output value. A value of 1 will apply no smoothing, a value of 0 will apply maximum smoothing.
Scale
Adjust the scale/range of the modifier.
Offset
Offset the waveform.
Smoothness
Adjust the amount of smoothing to applied to the output value.
Preview In Viewport
Preview the generated image as an overlay in the viewport.
Modifier Values
Read only graph to show the output of the modifier.
Parameter Details EQ Band 0
The gain applied to frequency band 0 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 1
The gain applied to frequency band 1 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 2
The gain applied to frequency band 2 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 3
The gain applied to frequency band 3 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 4
The gain applied to frequency band 4 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 5
The gain applied to frequency band 5 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 6
The gain applied to frequency band 6 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 7
The gain applied to frequency band 7 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 8
The gain applied to frequency band 8 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 9
The gain applied to frequency band 9 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 10
The gain applied to frequency band 10 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 11
The gain applied to frequency band 11 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 12
The gain applied to frequency band 12 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 13
The gain applied to frequency band 13 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 14
The gain applied to frequency band 14 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
EQ Band 15
The gain applied to frequency band 15 of the FFT when analysing audio, from the lowest band (0) to the highest (15).
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Current Value | Shows the current value of the modifier. Cannot be directly changed. |
| Blend Amount | The amount to blend the input modifier’s value with its new value. |
| Sound | Sound file used for the modifier. This can be overwritten with the sound input pin. |
| Looping | Controls whether the sound loops across timeline loops or resets. Only functions if a sound is selected within this node and a sound source isn’t connected to the Sound input. |
| Operation |
The operation to be performed on the targeted parameter.
|
| Restore Values | Toggle whether the values restore to 0. If unchecked, generated values incrementally add to the modifier value. |
| Channel | Determines whether the modifier will respond to the left, right, or stereo channels of the incoming sound |
| Channel |
Which audio channel is used.
|
| Frequency Band | Sets the Band EQ to a given band. Bands will double in frequency going upwards. |
| Time Offset | Offsets the time the value is modified from the time the waveform is played. |
| Change Threshold | Changes the threshold for what counts toward the modifier. |
| Attack | Controls the initial time between the current value to the peak. |
| Decay | Controls the time between the peak to the sustain level. |
| Min Value | Acts as a minimum threshold for extracting a range of values from the audio feed. |
| Max Value | Acts as a maximum threshold for extracting a range of values from the audio feed. |
| Max Clamp | Clamps the result. |
| Spikiness | You can use this property limit the rate of change of the output value. A value of 1 will apply no smoothing, a value of 0 will apply maximum smoothing. |
| Scale | Adjust the scale/range of the modifier. |
| Offset | Offset the waveform. |
| Smoothness | Adjust the amount of smoothing to applied to the output value. |
| Preview In Viewport | Preview the generated image as an overlay in the viewport. |
| Modifier Values | Read only graph to show the output of the modifier. |
| Parameter | Details |
|---|---|
| EQ Band 0 | The gain applied to frequency band 0 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 1 | The gain applied to frequency band 1 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 2 | The gain applied to frequency band 2 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 3 | The gain applied to frequency band 3 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 4 | The gain applied to frequency band 4 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 5 | The gain applied to frequency band 5 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 6 | The gain applied to frequency band 6 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 7 | The gain applied to frequency band 7 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 8 | The gain applied to frequency band 8 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 9 | The gain applied to frequency band 9 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 10 | The gain applied to frequency band 10 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 11 | The gain applied to frequency band 11 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 12 | The gain applied to frequency band 12 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 13 | The gain applied to frequency band 13 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 14 | The gain applied to frequency band 14 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
| EQ Band 15 | The gain applied to frequency band 15 of the FFT when analysing audio, from the lowest band (0) to the highest (15). |
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Sound | Use the waveform from a given Sound Loader or Sound Capture node. | Sound Loader |
| Parameter Value Array | Used to set the parameters of the node using an array. | Parameter Array |