Astroid

This is a curve with a fast decay at beginning and a slow decay at the end. The area of the curve is 29.85% of the full square area (-10.38 dB).

If based on area ratio (current to Linear (50%), it’s RT60 time should be 0.61 of Linear RT60.

This curve was calculated from the Astroid Curve Equation ( https://en.wikipedia.org/wiki/Astroid )

SQF

This collection was made by direct Fall from White Noise of default style Octave Square Curves.

It’s a general-purpose fast decay impulse, for vocals and instruments, or any electronic musical source.

The collection is divided into  44.1 kHz 24 bit, 48 kHz 24 bit and 96 kHz 24 bit folders.

Inside each folder 12 tone folders (A to Bb).

Inside each Tone folder has 8 clean impulse files and another folder with 8 pan processed impulse files, in a total of 576 files, with the following folder structure:

Wave Naming

SQF WND AST A 3 means Square Fall White Noise as generator with delay, Astroid as fall curve, A Minor as Tone and 3 seconds of Impulse length.

SQF WND AST A MS 3 the same as previous but with an M/S building processing

SQF WND AST A 6 means Square Fall White Noise as generator with delay, Astroid as fall curve, A Minor as Tone and 6 seconds of Impulse length.

SQF WND AST A Oct 6 Oct means one octave up

SQF WND AST A PAN 3  means pan processed Square Fall White Noise as generator with delay, Astroid as fall curve, 3 seconds of Impulse length.

SQF WND AST A PAN MS 3 the same as previous but with an M/S building processing

SQF WND AST A PAN 6 means pan processed Square Fall White Noise as generator with delay, Astroid as fall curve, 6seconds of Impulse length.

SQF WND AST A PAN Oct 6 Oct means one octave up

The files on the other folders follow the same syntax meanings