Silver

This is a curve with a medium decay at beginning and a medium decay at the end. The area of the curve is 40.77% of the full square area (-7.79 dB).

If based on area ratio to Linear area, it’s RT60 time should be 0.82 of Linear RT60.

This curve was calculated inserting the number 1.324718 (X^3 = X+3)) into a base 10 logarithmic equation

Logarithm – Wikipedia

3 UMD

3 UMD means that Each frequency of the chord was faded out at a different speed, using the sequence Up-Mid-Down.

It’s a general-purpose medium 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, 2 folders Major and Minor, having 16 Impulse files each, in a total of 1152 Impulse files, with the following folder structure:

Wave Naming

3UMDWN Silver A Min 3 means 3 UMD White Noise as generator, Silver as fall curve, A Minor as Tone and 3 seconds of Impulse length.

3UMDWN Silver A Min MS 3 the same as previous but with an M/S building processing

3UMDWN Silver A Min 6 means 3 UMD White Noise as generator, Silver as fall curve, A Minor as Tone and 6 seconds of Impulse length.

3UMDWN Silver A Min D2Oct 3 D2Oct means 2 octaves down

3UMDWN Silver A Min D2Oct MS 3 the sane with an M/S processing

3UMDWN Silver A Min DOct 3 DOct means one octave down

3UMDWN Silver A Min Oct 3 Oct means one octave up

The files on the other folders follow the same syntax meaning