**Introduction to Acoustic Engineering**
Greetings, my name is Andrew and I will be your guide as we cruise through the basics of Acoustic Engineering. My approach in explaining the topics will be in an informal question and answer format. My knowledge in Acoustics stems from my background in Heavy Electrical Engineering. Which means, aside from designing your quiet air conditioners, I can also design rocket engines, jet engines and power plants. Acoustics is a significant part of jet engine design, the noise of a jet engine is at hazard levels and if sound is not properly absorbed and diffused, it can self-resonate in jet cavities leading to catastrophic results similar to the infamous “Galloping Gertie” from Tacoma, Washington.
In electrical aeronautical engineering, we deal with sound dynamics of jet cavities and pressurized cabins. In civil engineering, acoustic engineering is most commonly used in design of concert halls, cinema halls, bridges, music studios and home theaters. For the sake of simplicity, I will approach the subject from a musical perspective instead of an engineering perspective.
To many, acoustics feel like some kind of magic that makes a studio sound good. It is that invisible technology that works for you night and day. Whether you are an engineer, audio enthusiast or a musician, understanding of basic principles of acoustics can make a difference at many levels. Please be advised, this is not a primer of what the best acoustic treatment is, instead it covers the basics of acoustics without going into cumbersome details of a myriad acoustic engineering products.
Interested in reading more? Download the full article here:
Basics of Acoustic Engineering IRD.pdf (497.7 KB)
Relevant animated illustrations (since PDFs cannot play gifs …)
Room Mode Animated Illustrations (links to these are also in the PDF)
Oblique Room Modes (with calculation)
Tangential Room Modes
Axial Room Modes
Speaker Boundary Interference Illustration