Graphs & Details at

The principle of convolution offers astounding potential in the area of reverb impulses (RI) previously unattainable with existing reverb technology. Most (if not all) RI renderings of \"high end\" digital reverb widely available on the internet barely scratch the surface of what is attainable using the power and sophistication true 24 bit convolution can deliver.

When using these \"freeware\" RI\'s, you are basically using yesterday\'s 16 bit technology on today\'s 24 bit system. It is not surprising that these \"hardware simulations\" do not have the neutrality/clarity or maximum richness of impulses that can be explicitly designed using convolution. Numerical Sound\'s impulses are the only impulses that have been optimized for true, full 24 bit performance which the following graphs will illustrate.

Given the state of today\'s technology, there is simply no excuse for a \"non-flat\" frequency response in a reverb impulse. It makes more sense for a producer to use an EQ plugin (or FFT filter impulse) to alter the sound of the wet signal and have it change dynamically with the musical nature of the mix than resort to various high frequency enhancers or multi-band dynamics processors in order to fix the overall sound.

Reverb Impulses Tested

1) Pure Space impulse from CD Classical & Mystical Reverberation Impulses no. 1810

2) TC6000A \"f1-1-8large hall clear\" impulse from

3) Lexicon PCM91 Studio B \"Large Chamber\" impulse from

4) Lexicon 960 Ambience \"ambient hall\" impulse from

5) ALtiverb Impulse \"Concertgebou Far Omni Position\" impulse from

6) Sony DRE777 \"Concertgebou 2.3\" impulse from

The graphs and details are at

Ernest Cholakis
Numerical Sound