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Reducing standing waves with phase randomization
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[QUOTE="sophiecentaur, post: 5448814, member: 199289"] If you are trying to measure, rather than to listen, I should think that a swept frequency measurement would take you through peaks and troughs in the sound level, measured in the room, as the phase difference of direct and reflected wave change with frequency. That would give a good indication of the absorbency of the wall material. I remember, years before you could buy RF vector analysers at a decent price, we used a R&S instrument that worked on the same principle to what I'm suggesting and it would give you the equivalent to a swept Voltage Standing Wave Ratio, which would tell you how good the termination was, on a cable. Now this method will not tell you 'sound insulation' because you need to measure levels on the other side of the wall BUT it will tell you the sound absorbency (but you don't know if the incident sound has gone through or been lost in the material of the wall. [/QUOTE]
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Reducing standing waves with phase randomization
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