## Macro Command Reference

`fft <windowing> <BUFFER>`

Performs a Fast Fourier Transform and generates a new buffer with the result.
`<windowing>`: 1=none, 2=Hanning, 3=Welch, 4=Parzen

`BUFFER`

a list of one or more data buffers. Possible values are:

`all` | all buffers in the document
`selected` | selected buffers in the document
`unselected` | unselected buffers in the document
`visible` | visible buffers in the document
`hidden` | hidden buffers in the document
`none` | no buffer
`b1,b2,b3,...,bn` | a list of buffers where the arguments may be math expressions.
`bs..be` | buffers from bs to be