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In the Forum: Audio Discussions
In the Thread: A listening room for a domesticated Cat?
Post Subject: Clarity in the murkPosted by steverino on: 4/2/2018
Romy,
OK this is getting clearer I think. Any object that receives a force will vibrate. So even before the music starts but there are hundreds of people in the seats, their feet moving around are vibrating the floor slightly. Similarly the orchestra players just sitting in their seats and moving slightly are vibrating the stage. When the music starts the soundwaves in a well designed hall echo in accordance with the calibrated reflectivity of the hall. But larger heavier objects like the floor or ceiling or internal wall structures also vibrate but at very low frequencies. The difference is that the floor is vibrating much more to the contact pressure of tens of thousands of pounds of people moving in their seats than the very slight force of an airborne vibration from the music or people talking. So unlike the regular hall delay, these low frequency vibrations have a far higher proportion of non musical generation. Since their vibratory rate in the concert hall is so low and the Db level is also low they have not been worried about. Similarly even the best recording studios can be vibrated by low frequency waves passing through the ground.
So OK when you are at a concert you can slightly sense some low frequency vibration specific to the venue. For some reason your previous residence had a low frequency presence which pleased you more than your current room does. But this is no different than the changes that occur between concert venues. I think other than major construction, you have a tough problem if you have become sensitive to this low frequency venue vibration to the point that it bothers you if not to your taste.
Off hand I think you would have to set up a separate audio system with a CD containing low frequency sounds going to a subwoofer that can go very low and experiment with that.
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