Now, let’s talk about non-traditional rooms, and some examples of speakers that perform better with highly reflective room boundaries. Room Boundary: A wall, ceiling, floor, or partition against which mid- and high-frequency sound waves reflect. Sound energy is never “absorbed,” but rather converted. Reverberation: The amount of time a sound reflects within a given space before decaying to inaudibility.Ībsorption: The conversion of sound energy into minute amounts of heat. In other words, diffusion is the equivalent of light hitting a disco ball. Refraction and diffraction are similar, except that the medium through which sound travels is changing the direction of the sound wave, rather than a fixed object.ĭiffusion: The scattering of sound waves to multiple points that do not mirror the angle at which the original sound wave struck the corresponding surface. Refraction: The change in the direction of sound due to the velocity of different mediums. Reflection: The direct, linear path mid- and high-frequency sound waves travel after striking a room boundary, such as a wall, a piece of glass, or other non acoustically porous objects.ĭiffraction: The bending of (generally) low-frequency sound waves, which tend to travel around and through objects due to the large size of sound waves below 200Hz. Pohlmann, or other scientific monographs on the subject of acoustic theory.įirst, let’s define some important terms: But remember, it would be impossible to cover every aspect and every scenario on the subject in a weekly blog without boring you to death for those looking for more complete guides to room acoustics, I highly recommend The Master Handbook of Acoustics by F. This week, let’s delve a little deeper into room acoustics. Rooms have irregular shapes, some people use electrostats, and many of us share our listening spaces with the rest of the family-that’s why they call it a living room. Unfortunately, most guides that try to explain room acoustics assume that you are using a traditional point-source speaker with cones and woofers in a rectangular room, but the real world is a lot more diverse than that.
#Sound diffraction partition how to#
We talked about how to determine reflection points in your room that might be causing your system to sound bright or your imaging to be slightly imprecise, and we also talked about room modes-the low-frequency waves that tend to build and overlap, which often cause a lot of issues with boomy or bloated bass, or bass that is ill-defined. Last week, we skimmed the surface of room acoustics with a brief introduction to the subject.
Welcome back to Sunday Morning Hi Fi #5, a blog that talks about music, gear, system tips and tweaks, and the reasons we love our high-end systems.
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