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 WND

Major and Minor chords faded out, in the extension of 9 octaves, using White Noise with delay generator.

Equal frequency relations were applied thru the notes of the chords 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, a Major and a Mix folder.

Inside each Mix folder is a Major and a Minor folder, all of them having 8 impulse files.

In the Mix folder a different relation between the notes of the chords were used

A total of 1152 Impulse files distributed according to the following folder structure:

Wave Naming

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

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

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

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

The files on the other folders follow the same syntax meanings