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