Category Archives: Room Models

simulation of real rooms

Spreaded church organ pipes

What’s the problem with just a handful of IRs?

This is a conversation between a sceptical prospective customer (or rather not), who is far from being convinced what I’m trying to explain..

Whenever I’m recording the impulse response of any QUANTEC Room Simulation, for putting it through my convolution plug-in, its spatiality collapses altogether. To name a number, the 60 to 150 feet depth of a sacred building has completely vanished into thin air. No idea of what’s going wrong. Maybe some copy protection you’ve hidden intelligently?

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Three guys in bathtub

How to get rid of that bathroom sound

Where does that ugly metallic sound originate from?

As is well known, a room can only develop reverberation on frequencies where room resonances (»modes«) are available. The less of the useful signal “slips through the cracks”, the lower the coloration of the reverb sound. A feedback delay line of 1 sec has a natural frequency density of 1 Hz, so it can form reverberation at e.g. 98, 99, 100, 101, 102 Hz. For a delay loop with just 0.1 sec, i.e. one tenth of the delay,, the natural frequency density would be 10 times more patchy,  e.g. 80, 90, 100, 110, 120 Hz. Continue reading

TU Dresden - reverberation chamber

Dismantling the myths of reverberation chambers

A real reverberation chamber with driving speakers and capturing microphones – that’s it, right?

Not necessarily! – Reverberation chambers are usually much too small, and Mother Nature cannot be cheated with regard to room size. There are a number of shortcomings with reverberation chambers, that cannot be compensated with ugly tricks like pre or post delay. Continue reading