HS066

This is a curve with a medium slow decay at beginning and a  very slow decay at the end. The area of the curve is 40.75% of the full square area (-7.8 dB).

If based on area ratio (current to Linear (50%), it’s RT60 time should be 0.81 of Linear RT60.

This curve was calculated from the Hyperbolic Secant Curve Equation, applying a value of 0.666666 as constant

https://mathworld.wolfram.com/HyperbolicSecant.html

https://archive.lib.msu.edu/crcmath/math/math/h/h424.htm

3 SMO

Major and Minor chords were faded out, in the extension of 9 octaves, using 3 different Smoothed White Noise generators with delay to produce this set of impulses

It’s a general-purpose soft slow 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, a Minor and a Major folder with 3 folders of different source types inside, In each inside folder we have 8 Impulse, in a total of 1728 Impulse files, with the following folder structure:

Wave Naming

3SMOO I WND HS066 A Min D2Oct 3  means 3 SMOO I White Noise as generator, two octaves down Hyperbolic Secant 0.666666 as fall curve, A Min as Tone and 3 seconds of Impulse length.

3SMOO I WND HS066 A Min D2Oct MS 3 the same as previous but with M/S processing.

3SMOO I WND HS066 A Min D2Oct 6 means 3 SMOO I White Noise as generator, two octaves down Hyperbolic Secant 0.666666 as fall curve, A + Eb as Tone and 6 seconds of Impulse length.

3SMOO I WND HS066 A Min DOct 6 DOct means 1 octave down.

The files on the other folders follow the same syntax meanings