fastconv-float1

Direct fast fourier transformation cli tool

Usage

`-n nfft`	fft size to use
`-d`	use direct FIR filtering, not fast convolution
`-i filename`	input file
`-o filename`	output(filtered) file
`-n nfft`	fft size to use
`-h filename`	impulse response

Unchanged in 3 releases since Debian 11 (Bullseye).