RICK FITZPATRICK
New member
Hello everyone, I found an acoustics website lastnight that has some interesting things to say, and as I read the following passage, something occured to me that I would like to ask about here. I know if we had an acoustician posting here, he would probably clarify this for me. It has to do with all the work people do to avoid standing waves(i.e.)non parallel walls. Maybe someone knows of other reasons for them, however this statement makes me wonder. here is the quote:
"Driving the room at a frequency which is not a resonance frequency(heading)
Standing wave patterns ONLY occur when the room is being driven at a resonance frequency. At any other frequency, the pressure waves radiating outwards from the source reflect from the walls, but do not combine to produce a standing wave. As a result, there are no nodes and antinodes, and the pressure can go to zero at a
wall. The maximum pressure never exceeds the source level (1) and the location of the pressure maximum moves with the source." unquote
Ok, not being anything but a studio wannabuildit, this implys, at least to my way of thinking, and which is probably wrong, that using non-parallel walls is a good idea to keep standing waves from occuring at the resonant frequency of the room. AND THATS
ALL. No other frequencys can generate standing waves. Soooooo........ Please clarify this for me, as even Mr. Everest suggests that there is a school of thought that a rectangular room is practical for a studio/control room.(I think,don't burn me at the stake on that). My question is, for the most part, is building non-parallel walls that important, so as to only prevent standing waves at the resonant frequency of the room. Or am I oversimpifying something that is inherently more complex than this quote implys. In my mind, the resonant frequency of the room is only the associated modes of that frequency, so how often would one assume that music being played in that room, generate that frequency. I seem to think that there is a general concensus of homebuilt studio owners, who think that non parallel walls are there to keep standing
waves from forming at all frequencys, not just the resonant frequency. Any insight into this subject or clarification in regards to building non parallel walls, would be greatly appreciated. I will say it again, I am NO EXPERT at this stuff, not even in my wildest dreams do I even want to be. I just want the truth. Thats all. Here is the url from the page. http://www.kettering.edu/~drussell/Demos/RoomModes/driving.html
Kind of interesting if you like peanut butter with no milk(quoting knightfly
)
fitz
"Driving the room at a frequency which is not a resonance frequency(heading)
Standing wave patterns ONLY occur when the room is being driven at a resonance frequency. At any other frequency, the pressure waves radiating outwards from the source reflect from the walls, but do not combine to produce a standing wave. As a result, there are no nodes and antinodes, and the pressure can go to zero at a
wall. The maximum pressure never exceeds the source level (1) and the location of the pressure maximum moves with the source." unquote
Ok, not being anything but a studio wannabuildit, this implys, at least to my way of thinking, and which is probably wrong, that using non-parallel walls is a good idea to keep standing waves from occuring at the resonant frequency of the room. AND THATS
ALL. No other frequencys can generate standing waves. Soooooo........ Please clarify this for me, as even Mr. Everest suggests that there is a school of thought that a rectangular room is practical for a studio/control room.(I think,don't burn me at the stake on that). My question is, for the most part, is building non-parallel walls that important, so as to only prevent standing waves at the resonant frequency of the room. Or am I oversimpifying something that is inherently more complex than this quote implys. In my mind, the resonant frequency of the room is only the associated modes of that frequency, so how often would one assume that music being played in that room, generate that frequency. I seem to think that there is a general concensus of homebuilt studio owners, who think that non parallel walls are there to keep standing
waves from forming at all frequencys, not just the resonant frequency. Any insight into this subject or clarification in regards to building non parallel walls, would be greatly appreciated. I will say it again, I am NO EXPERT at this stuff, not even in my wildest dreams do I even want to be. I just want the truth. Thats all. Here is the url from the page. http://www.kettering.edu/~drussell/Demos/RoomModes/driving.html
Kind of interesting if you like peanut butter with no milk(quoting knightfly
)fitz
I mean, thats why I ask questions. Its not easy to publicly show how DUMB I am. And then be burned at the stake? Well, its milk time. Thanks again for the clarification. Have you designed your rooms yet gentlemen. I am ALWAYS interested in seeing other peoples ideas. Building anything is a passion of mine. I like 3D design in all forms. In fact, the name of my little business is "dimensional design", although I fabricate also. Watched my dad build (3) airplanes from the ground up. Everytime I think building a room that lives up to being called a "studio" is difficult, I then recall that moment when a homebuilt aircraft owner gets in his plane and FLYS IT.