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Acoustic System Resonators - follow-up

As intended, I mailed Franck Tchang about his resonators and we exchanged some emails.

It turned out that there are three different explanations for how his cups work:

A - His French patent: cups are excited to resonance by sound waves coming from speakers, thereby attenuating acoustic parasite phenomena (the patent does not further specify what exactly these phenomena are).

B - Tchang had the cups examined by Paris based company ProLinks: cups act as complex tuning fork, which produces an echo (secondary sound source), lowering the reverberation time in the bass range (sic).

C - In his reply Tchang states that the cups treat room resonances (standing waves), air factor (?), making the harmonics re-appear by cancelling reflection/air damping factor (not sure what the latter means).


Is it now A, B or C?

For further clarification I then contacted the German distributor Thomas Fast (www.fastaudio.de). No answer.

Those wo are interested in reading the email exchange with Mr. Tchang, mail me off-board.


Klaus


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Topic - Acoustic System Resonators - follow-up - KlausR. 23:23:28 11/17/06 (40)
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