Spectrum Detection
Use Spectrum Detection to divide the audio spectrum range (0 Hz to 22050 Hz) into 8 output bands, and detect the magnitude of each band in a range between 0 and 255. You can use the output values to animate or transform 2D objects. Spectrum Detection is in the Audio category.
Input
| Name | Data type | Description |
| Audio | Audio Stream | The audio stream you want to detect the magnitude of the spectrum range |
| Enabled | Boolean | Enable this node |
Output
| Name | Data type | Description |
| Audio | Audio Stream | The connected audio stream. Connect it to a speaker to play or connect it to a Detection Output to play with no sound. |
| Average | Number | The average magnitude of the audio stream |
| Band 1 | Number | The magnitude of the spectrum range from 0 Hz to 2756 Hz |
| Band 2 | Number | The magnitude of the spectrum range from 2756 Hz to 5512 Hz |
| Band 3 | Number | The magnitude of the spectrum range from 5512 Hz to 8269 Hz |
| Band 4 | Number | The magnitude of the spectrum range from 8269 Hz to11025 Hz |
| Band 5 | Number | The magnitude of the spectrum range from 11025 Hz to 13781 Hz |
| Band 6 | Number | The magnitude of the spectrum range from 13781 Hz to16537 Hz |
| Band 7 | Number | The magnitude of the spectrum range from 16537 Hz to 19293 Hz |
| Band 8 | Number | The magnitude of the spectrum range from 19293 Hz to 22050 Hz |
Example
In this example, it detects the bandwidth of the audio stream, then maps the 8 range outputs to the 8 graphic bars’ height in realtime.
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